The temperature in the freezer compartment of a refrigerator is 3°C, and the temperature in the freezer compartment is -16°C. What is the temperature difference between the freezer compartment and the freezer compartment in this refrigerator?
一款冰箱冷藏室的温度是3℃，冰冻室的温度是-16℃，这款冰箱冷藏室和冰冻室的温度相差多少℃．
<gadget id="calculator">3 - (-16)</gadget>
<output>19</output>

<result>19</result>