A worker's annual salary is 12,000 yuan and a motorcycle. This worker only worked for 7 months, and his salary at the end of the year was 5,000 yuan and a motorcycle. How much is this motorcycle worth?
工人一年的工资是12000元和一辆摩托车．这个工人只上了7个月的班，年终得到的工资是5000元和一辆摩托车．这辆摩托车价值是多少元．
<gadget id="calculator">12_000 / 12</gadget>
<output>1_000</output>

<gadget id="calculator">1_000 * 7</gadget>
<output>7_000</output>

<gadget id="calculator">7_000 - 5_000</gadget>
<output>2_000</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/12) * 7</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">1 - (7/12)</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">2_000 / (5/12)</gadget>
<output>4_800</output>

<result>4_800</result>