There are 2 different story books and 3 different science books in the bookstore. Xiao Ming wants to buy one of the books, how many different ways are there in total?
书店里有2本不同故事书和3本不同的科技书．小明要买其中的一本书，一共有多少种不同的买法．
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<result>6</result>