Xiao Ming has 4 different science and technology books and 3 different story books. In a book donation activity for poor schools, he planned to donate one science and technology book and one story book. How many different donation methods did he have?
小明有4本不同的科技类图书和3本不同的故事类图书．在一次为贫困学校捐书的活动中，他准备捐科技类和故事类图书各一本，他有多少种不同的捐法．
<gadget id="calculator">4 * 3</gadget>
<output>12</output>

<result>12</result>