Today's spring outing, Xiaohong's mother prepared 3 different tops and 4 different pants for Xiaohong, and asked Xiaohong to wear them together. How many different ways does Xiaohong have to wear them? (Only one jacket and one pair of pants can be worn each time)
今天春游，小红的妈妈给小红准备了3件不同的上衣，4条不同的裤子，让小红自己搭配着穿，小红有多少种不同的穿法．(每次上衣与裤子只能各穿一件)
<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<result>12</result>