What happens next in this paragraph?

How to calculate market share
Determine the period you want to examine for each company you are investigating.
In order to make sure you are making an apples-to-apples comparison, you must examine sales in a specific time period. You can examine the sales over the length of a quarter, a year, or over several years.
Calculate the company's total revenue (also called total sales). All publicly-traded companies must release quarterly or annual financial statements.