The school bought 78 footballs, 2 more than 4 times the number of basketballs. How many basketballs are there?
学校买来足球78个，比篮球个数的4倍还多2个，篮球有多少个？
<gadget id="calculator">78 - 2</gadget>
<output>76</output>

<gadget id="calculator">76 / 4</gadget>
<output>19</output>

<result>19</result>