Mom bought 15.6 yuan of pears and 7.8 yuan of tomatoes in the supermarket, and paid the cashier 50 yuan. How much should I get back?
妈妈在超市里买了15.6元的梨和7.8元的西红柿，付给收银员50元，应找回多少钱？
<gadget id="calculator">15.6 + 7.8</gadget>
<output>23.4</output>

<gadget id="calculator">50 - 23.4</gadget>
<output>26.6</output>

<result>26.6</result>