Xiaolan's mother brought 50 yuan to buy vegetables, 28.75 yuan to buy meat, and 6.25 yuan to buy vegetables. How much money is left?
小兰的妈妈带50元钱去买菜，买肉用去28.75元，买蔬菜用去6.25元，还剩多少元钱？
<gadget id="calculator">28.75 + 6.25</gadget>
<output>35</output>

<gadget id="calculator">50 - 35</gadget>
<output>15</output>

<result>15</result>