The school bought 75 footballs, which is 15 times that of basketballs. How many basketballs did they buy? (Answer in two ways).
学校买来足球75个，是买来篮球的15倍，买来篮球多少个？(用两种方法解答)．
<gadget id="calculator">75 / 15</gadget>
<output>5</output>

<result>5</result>