Huanhuan has 10.2 yuan, and Mingming’s money is 8.2 yuan less than Huanhuan’s three times, how much is it?
欢欢有10.2元，明明的钱比欢欢的3倍少8.2元，明明多少钱？
<gadget id="calculator">10.2 * 3</gadget>
<output>30.6</output>

<gadget id="calculator">30.6 - 8.2</gadget>
<output>22.4</output>

<result>22.4</result>