An exercise book is 20 yuan, and the price of a math book is 2 yuan more than three times it. How much is a math book?
一本练习册20元，数学书的价格比它的3倍多2元，一本数学书多少元？
<gadget id="calculator">20 * 3</gadget>
<output>60</output>

<gadget id="calculator">60 + 2</gadget>
<output>62</output>

<result>62</result>