Xiaohong has 3 different tops and 4 different pants. How many different ways of dressing and matching are there?
小红有3件不同的上衣、4条不同的裤子，共有多少种不同的穿衣搭配方法．
<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<result>12</result>