Read the following texts and table with financial data from an S&P 500 earnings report carefully.Based on the question-answer history (if provided), answer the last question. The answer may require mathematical calculation based on the data provided.


december 31 , 2015 carrying amount accumulated amortization . <table class='wikitable'><tr><td>1</td><td>december 31 2015</td><td>gross carrying amount</td><td>accumulated amortization</td></tr><tr><td>2</td><td>computer software</td><td>$ 793</td><td>$ -643 ( 643 )</td></tr><tr><td>3</td><td>patents and licenses</td><td>110</td><td>-98 ( 98 )</td></tr><tr><td>4</td><td>other intangibles ( f )</td><td>961</td><td>-64 ( 64 )</td></tr><tr><td>5</td><td>total amortizable intangible assets</td><td>1864</td><td>-805 ( 805 )</td></tr><tr><td>6</td><td>indefinite-lived trade names and trademarks</td><td>45</td><td>-</td></tr><tr><td>7</td><td>total other intangible assets</td><td>$ 1909</td><td>$ -805 ( 805 )</td></tr></table> computer software consists primarily of software costs associated with an enterprise business solution ( ebs ) within arconic to drive common systems among all businesses . amortization expense related to the intangible assets in the tables above for the years ended december 31 , 2016 , 2015 , and 2014 was $ 65 , $ 67 , and $ 55 , respectively , and is expected to be in the range of approximately $ 56 to $ 64 annually from 2017 to 2021 . f . acquisitions and divestitures pro forma results of the company , assuming all acquisitions described below were made at the beginning of the earliest prior period presented , would not have been materially different from the results reported . 2016 divestitures . in april 2016 , arconic completed the sale of the remmele medical business to lisi medical for $ 102 in cash ( $ 99 net of transaction costs ) , which was included in proceeds from the sale of assets and businesses on the accompanying statement of consolidated cash flows . this business , which was part of the rti international metals inc . ( rti ) acquisition ( see below ) , manufactures precision-machined metal products for customers in the minimally invasive surgical device and implantable device markets . since this transaction occurred within a year of the completion of the rti acquisition , no gain was recorded on this transaction as the excess of the proceeds over the carrying value of the net assets of this business was reflected as a purchase price adjustment ( decrease to goodwill of $ 44 ) to the final allocation of the purchase price related to arconic 2019s acquisition of rti . while owned by arconic , the operating results and assets and liabilities of this business were included in the engineered products and solutions segment . this business generated sales of approximately $ 20 from january 1 , 2016 through the divestiture date , april 29 , 2016 , and , at the time of the divestiture , had approximately 330 employees . this transaction is no longer subject to post-closing adjustments . 2015 acquisitions . in march 2015 , arconic completed the acquisition of an aerospace structural castings company , tital , for $ 204 ( 20ac188 ) in cash ( an additional $ 1 ( 20ac1 ) was paid in september 2015 to settle working capital in accordance with the purchase agreement ) . tital , a privately held company with approximately 650 employees based in germany , produces aluminum and titanium investment casting products for the aerospace and defense markets . the purpose of this acquisition is to capture increasing demand for advanced jet engine components made of titanium , establish titanium-casting capabilities in europe , and expand existing aluminum casting capacity . the assets , including the associated goodwill , and liabilities of this business were included within arconic 2019s engineered products and solutions segment since the date of acquisition . based on the preliminary allocation of the purchase price , goodwill of $ 118 was recorded for this transaction . in the first quarter of 2016 , the allocation of the purchase price was finalized , based , in part , on the completion of a third-party valuation of certain assets acquired , resulting in a $ 1 reduction of the initial goodwill amount . none of the $ 117 in goodwill is deductible for income tax purposes and no other intangible assets were identified . this transaction is no longer subject to post-closing adjustments . in july 2015 , arconic completed the acquisition of rti , a u.s . company that was publicly traded on the new york stock exchange under the ticker symbol 201crti . 201d arconic purchased all outstanding shares of rti common stock in a stock-for-stock transaction valued at $ 870 ( based on the $ 9.96 per share july 23 , 2015 closing price of arconic 2019s .
Question: what is the gross carrying amount for computer software as of dec 31, 2015?
Answer: 793.0
Question: what about the accumulated depreciation related to computer software?
Answer: 643.0
Question: what is the original cost for computer software?

1436.0