If a commodity is sold at the fixed price, it can make a profit of 960 yuan, but if it is sold at 80% of the fixed price, the loss will be 832 yuan. How much is the purchase price of this product.
某种商品按定价卖出可以获得利润960元，如果按照定价的80%出售，则亏损832元．该商品的购入价是多少元．
<gadget id="calculator">960 + 832</gadget>
<output>1_792</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1_792 / (1/5)</gadget>
<output>8_960</output>

<gadget id="calculator">8_960 - 960</gadget>
<output>8_000</output>

<result>8_000</result>