The temperature of the refrigerator in Xiaojie’s house is 5°C, and the temperature of the freezer is -2°C. How much higher is the temperature of the freezer in his refrigerator than in the freezer?
小杰家的冰箱冷藏室温度是5℃，冷冻室的温度是-2℃，则他家冰箱冷藏室温度比冷冻室温度高多少℃
<gadget id="calculator">5 - (-2)</gadget>
<output>7</output>

<result>7</result>