Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Danivan Drugstore has 4500 bottles of hand sanitizer gel in inventory at the beginning of the week. On Monday 2445 bottles were sold, on Tuesday 900 bottles were sold, and 50 bottles each day for the rest of the week were sold (from Wednesday until Sunday). On Saturday, the supplier delivers an order for 650 bottles. How many bottles of sanitizer gel does the Drugstore have at the end of the week?

### Response:
 Idadi ya chupa zilizouzwa Jumatatu na Jumanne ni 2445 + 900 = <<2445+900=3345>>3345 chupa.
Kila siku kuanzia Jumatano hadi Jumapili, chupa 50 ziliuzwa, yaani 5 * 50 = <<50*5=250>>250 chupa ziliuzwa.
Sasa jumla ya chupa zilizouzwa kwa wiki ni 3345 + 250 = <<3345+250=3595>>3595 chupa.
Duka la dawa lina chupa 4500 - 3595 = <<4500-3595=905>>905 mwishoni mwa wiki.
Hatimaye, duka la dawa lina chupa 905 + 650 ambazo muuzaji alileta = <<905+650=1555>>1555 mwishoni mwa wiki.