Students in Class 4 and Class 1 are going to run a Shenqi handwritten newspaper. Wang Hai, the monitor, is in charge of buying stationery. He spent 24.18 yuan to buy crayons, and 15.92 yuan more to buy watercolor pens than crayons. He paid 70 yuan. How much should the salesperson get back? money?
四1班的同学准备办一期神七手抄报，班长王海负责买文具，买蜡笔用去24.18元，买水彩笔比蜡笔多花15.92元，他付了70元，售货员应找回多少钱？
<gadget id="calculator">15.92 + 24.18 + 24.18</gadget>
<output>64.28</output>

<gadget id="calculator">70 - 64.28</gadget>
<output>5.72</output>

<result>5.72</result>