Uncle Wang was paid 8,600 yuan and a cow for one year of work. He started working in early January and was fired at the end of August. When he was fired, he was paid 3,800 yuan and a cow. How much is a cow worth?
王大伯工作一年的报酬是8600元和一头牛，他从1月初开始工作，到8月底被辞退，辞退时获得报酬是3800元和一头牛．一头牛的价值是多少元．
<gadget id="calculator">8 / 12</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">8_600 * (2/3)</gadget>
<output>17_200/3 = around 5_733.333333</output>

<gadget id="calculator">(17_200/3) - 3_800</gadget>
<output>5_800/3 = around 1_933.333333</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(5_800/3) / (1/3)</gadget>
<output>5_800</output>

<result>5_800</result>