Didi and Congcong have the same amount of money and go to the store to buy footballs. The footballs Didi chose are 80 yuan each, and the footballs Congcong chooses are 60 yuan each. They bought the same amount of footballs. Congcong found that she had left The bet was more money than Didi, so he gave Didi 80 yuan, so the two had the same amount of money. How many balls did they each buy?
迪迪和聪聪有相同的一笔钱去商店选购足球，迪迪选的足球每个80元，聪聪选的足球每个60元，他们买了相同数量的足球，聪聪发现她剩下的钱比迪迪多，就给了迪迪80元，这样两人的钱又一样多了，他们各买了多少个球？
<gadget id="calculator">80 * 2</gadget>
<output>160</output>

<gadget id="calculator">80 - 60</gadget>
<output>20</output>

<gadget id="calculator">160 / 20</gadget>
<output>8</output>

<result>8</result>