Ping Ping goes to buy a birthday gift for Xing Xing. Among the things sold in the store, there are 8 different toys, 20 different extracurricular books, and 10 different souvenirs. Then, how many different choices can Ping Ping buy for a gift? Law?
平平去给行行买生日礼物，商店里卖的东西中，有不同的玩具8种，不同的课外书20本，不同的纪念品10种，那么，平平买一种礼物可以有多少种不同的选法？
<gadget id="calculator">8 + 20 + 10</gadget>
<output>38</output>

<result>38</result>