From 4 girls and 3 boys, choose 1 girl and 1 boy to host a cultural performance. How many ways are there in total?
从4名女生和3名男生中选出1名女生和1名男生主持文艺汇演，一共有多少种选法．
<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<result>12</result>