Xiaoli has 4 sweaters and 3 skirts. If a sweater and a skirt can be matched randomly, how many different ways can they be worn?
小丽有4件毛衣和3条裙子，如果一件毛衣和一条裙子任意搭配，请问一共有多少种不同的穿法．
<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<result>12</result>