Uncle Wang’s annual salary is 12,400 yuan plus a refrigerator. After working for 7 months, Uncle Wang received 6,400 yuan and a refrigerator. (His monthly salary remains unchanged) So what is the unit price of the refrigerator?
王叔叔一年的工资是12400元加一台冰箱的钱，王叔叔工作7个月后获得了6400元和一台冰箱．(他的月工资不变)那么冰箱的单价是多少元．
<gadget id="calculator">12_400 - 6_400</gadget>
<output>6_000</output>

<gadget id="calculator">12 - 7</gadget>
<output>5</output>

<gadget id="calculator">6_000 / 5</gadget>
<output>1_200</output>

<gadget id="calculator">1_200 * 12</gadget>
<output>14_400</output>

<gadget id="calculator">14_400 - 12_400</gadget>
<output>2_000</output>

<result>2_000</result>