Xiaoli has 3 different half-sleeved shirts and 4 different shorts. How many different ways can she wear them?
小丽有3件不同的半袖衫，4件不同的短裤，一共有多少种不同的穿法．
<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<result>12</result>