Mom takes 100 yuan to the store, and after buying the kettle, there is 57 yuan left. How much did you spend on the kettle?
妈妈带100元去商店，买了水壶后还剩57元，买水壶花了多少钱？
<gadget id="calculator">100 - 57</gadget>
<output>43</output>

<result>43</result>