Xiaohong goes to a stationery store to buy a ballpoint pen and a fountain pen. Each ballpoint pen is 1.5 yuan, and each pen is 3.12 yuan more than each ballpoint pen. Xiaohong gives the salesperson 10 yuan. How much should I get back?
小红到文化用品商店买一枝圆珠笔和一枝钢笔，每只圆珠笔1.5元，每枝钢笔比每枝圆珠笔多3.12元，小红给售货员10元钱，应找回多少元？
<gadget id="calculator">1.5 + 3.12</gadget>
<output>4.62</output>

<gadget id="calculator">10 - 1.5 - 4.62</gadget>
<output>3.88</output>

<result>3.88</result>