A has 24.7 yuan and B has 15.3 yuan. They want to buy a toy together. The price of a toy is three times the sum of their money. How much is a toy?
甲有24.7元，乙有15.3元，两人要合买一个玩具，一个玩具的价钱是他俩钱数总和的3倍，一个玩具多少元？
<gadget id="calculator">24.7 + 15.3</gadget>
<output>40</output>

<gadget id="calculator">40 * 3</gadget>
<output>120</output>

<result>120</result>