Xiaohua took 40 yuan to the store and bought two pieces of stationery, one for 14.5 yuan and the other for 18.8 yuan. How much money is left?
小华带40元到商店买了两件文具，一件14.5元，另一件18.8元，还剩几元？
<gadget id="calculator">14.5 + 18.8</gadget>
<output>33.3</output>

<gadget id="calculator">40 - 33.3</gadget>
<output>6.7</output>

<result>6.7</result>