Xiao Ming has 4 different jackets and 3 different pants. Now he combines 1 jacket and 1 pair of pants to make a suit. How many ways does he wear in total?
小明有4件不同的上衣，3条不同的裤子，现将1件上衣和1条裤子搭配成一套衣服，他一共有多少种穿法．
<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<result>12</result>