He obviously spent 17.20 yuan on the teddy bear, and now he has 3 yuan left. How much money did he have?
明明买玩具熊用去了17.20元，他现在还剩3元钱，他原来有多少钱？
<gadget id="calculator">17.2 + 3</gadget>
<output>20.2</output>

<result>20.2</result>