There are 2 coats and 3 pairs of trousers, how many ways are there to wear 1 coat and 1 pair of trousers each time?
有2件上衣和3条裤子，每次穿1件上衣和1条裤子，一共有多少种穿法．
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<result>6</result>