Xiao Ming has 5 different tops and 3 different pants, so there are ﹙ ways to match the tops and pants.
小明有5件不同的上衣，3条不同的裤子，则上衣和裤子共有﹙﹚种搭配方法．
<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<result>15</result>