A shopping mall sells a batch of commodities at a reduced price during the Olympic merchandise exhibition. If each item is sold at a 10% discount, it can make a profit of 215 yuan; if it is sold at a 20% discount, it will lose 125 yuan. Ask the purchase price of each item How much is it?
某商场在迎奥运商品展销期间，将一批商品降价出售，如果每件降价10%出售，可盈利215元；如果打八折出售，则亏损125元，问此类商品每件的购入价是多少元？
<gadget id="calculator">125 + 215</gadget>
<output>340</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">340 / (1/10)</gadget>
<output>3_400</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">3_400 * (9/10)</gadget>
<output>3_060</output>

<gadget id="calculator">3_060 - 215</gadget>
<output>2_845</output>

<result>2_845</result>