Xiaohua has 10 yuan, 6.8 yuan is used to buy a stationery box, and 1.5 yuan is used to buy a ballpoint pen. How much money does Xiaohua have left?
小华有10元钱，买文具盒用去6.8元，买圆珠笔用去1.5元，小华还剩多少钱？
<gadget id="calculator">10 - 6.8 - 1.5</gadget>
<output>1.7</output>

<result>1.7</result>