Mom bought a pen for 27.6 yuan, and there was 31.5 yuan left. How much money did my mother bring?
妈妈买笔花了27.6元，还剩下31.5元，妈妈带了多少钱？
<gadget id="calculator">27.6 + 31.5</gadget>
<output>59.1</output>

<result>59.1</result>