There are 7 science and technology books on the upper shelf and 6 animation books on the lower shelf. How many different ways are there to take a science and animation book from the bookshelf?
书架的上层有7本科技书，下层有6本动漫书，每次从书架上任意取一本科技书和一本动漫书，共有多少种不同的取法？
<gadget id="calculator">7 * 6</gadget>
<output>42</output>

<result>42</result>