Experimental Primary School organized 580 teachers and students to go on an autumn outing, and after 10 cars were filled, there were still 20 people left. Average number of people per car.
实验小学组织师生580人去秋游，坐满10辆车后还剩20人．平均每辆车坐多少人．
<gadget id="calculator">580 - 20</gadget>
<output>560</output>

<gadget id="calculator">560 / 10</gadget>
<output>56</output>

<result>56</result>