The school used 80 yuan to buy sporting goods, 60 yuan to buy basketball, and bought 4 skipping ropes for the rest. How much is each skipping rope?
学校用80元买体育用品，买篮球用60元，剩下的买了4根跳绳，每根跳绳多少元？
<gadget id="calculator">80 - 60</gadget>
<output>20</output>

<gadget id="calculator">20 / 4</gadget>
<output>5</output>

<result>5</result>