The toy store bought 75 footballs, each priced at 20 yuan. After selling all of them, I made a profit of 600 yuan. How much is the purchase price of each football?
玩具店购进了75个足球，每个售价20元．全部卖出后赚了600元，每个足球的进货价格是多少元？
<gadget id="calculator">75 * 20</gadget>
<output>1_500</output>

<gadget id="calculator">1_500 - 600</gadget>
<output>900</output>

<gadget id="calculator">900 / 75</gadget>
<output>12</output>

<result>12</result>