Xiaofang bought 25 yuan/meter of cloth and 23 yuan/meter of cloth, a total of 12 meters. But the salesperson regarded the 25 yuan/meter of cloth as 23 yuan/meter, and the 23 yuan/meter of cloth as 25 yuan/meter, so the salesperson only charged Xiaofang 286 yuan. Question: How much did the salesperson lose?
小方买了25元/米的布和23元/米的布，共12米．但是售货员把25元/米的布看成是23元/米，23元/米的布看成是25元/米，所以售货员只收了小方286元．问：售货员赔了多少元？
<gadget id="calculator">25 * 12</gadget>
<output>300</output>

<gadget id="calculator">300 - 286</gadget>
<output>14</output>

<gadget id="calculator">25 - 23</gadget>
<output>2</output>

<gadget id="calculator">14 / 2</gadget>
<output>7</output>

<gadget id="calculator">7 * 25</gadget>
<output>175</output>

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

<gadget id="calculator">23 * 5</gadget>
<output>115</output>

<gadget id="calculator">175 + 115</gadget>
<output>290</output>

<gadget id="calculator">290 - 286</gadget>
<output>4</output>

<result>4</result>