If a commodity is priced at 1,200 yuan, and the profit is still 100 yuan after being sold at a 20% discount, what is the purchase price of the commodity?
某商品标价1200元，打8折售出后仍盈利100元，则该商品的进价为多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1_200 * (4/5)</gadget>
<output>960</output>

<gadget id="calculator">960 - 100</gadget>
<output>860</output>

<result>860</result>