Question: whats the mean of "operating profit margin" ? tell me in details and what things comes in calculations of this 

Answer: Operating Margin\nA ratio used to measure a company's pricing strategy and operating efficiency.\n\nCalculated by:\n\nOperating income /(divided by) netsales\n\nOperating margin is a measurement of what proportion of a company's revenue is left over after paying for variable costs of production, such as wages, raw materials, etc. A healthy operating margin is required for a company to be able to pay for its fixed costs, such as interest on debt.\n\nAlso known as "operating profit margin" or "net profit margin".\n \nInvestopedia Says... Operating margin gives analysts an idea of how much a company makes (before interest and taxes) on each dollar of sales. When looking at operating margin to determine the quality of a company, it is best to look at the change in operating margin over time and to compare the company's yearly or quarterly figures to those of its competitors. If a company's margin is increasing, it is earning more per dollar of sales. The higher the margin, the better.\n\nFor example, if a company has an operating margin of 12%, this means that it makes $0.12 (before interest and taxes) for every dollar of sales. Often, nonrecurring cash flows, such as cash paid out in a lawsuit settlement, are excluded from the operating margin calculation because they don't represent a company's true operating performance.\n\nOperating Margin [or Operating Profit Margin]\nThe operating margin is another measurement of management’s efficiency. It compares the quality of a company’s operations to its competitors. A business that has a higher operating margin than its industry’s average tends to have lower fixed costs and a better gross margin, which gives management more flexibility in determining prices. This pricing flexibility provides an added measure of safety during tough economic times.\n\nTo calculate the operating margin, divide operating income by the total revenue.\n\nOperating income\n----------(divided by)----------\nTotal revenue
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