A pencil is 0.8 yuan, and a notebook is 3.5 yuan. Xiaoli bought a pencil and a notebook. If you pay the salesperson 5 yuan, how much should you get back?
一枚铅笔0.8元，一本笔记本3.5元，小丽买了一枚铅笔和一本笔记本．付给售货员5元，应找回多少钱？
<gadget id="calculator">0.8 + 3.5</gadget>
<output>4.3</output>

<gadget id="calculator">5 - 4.3</gadget>
<output>0.7</output>

<result>0.7</result>