The cost of a commodity this year has increased by 10% compared to last year, but the original selling price is still maintained, so the profit per item has dropped (1/4), so what percentage of the selling price is the cost of this commodity this year?
一种商品，今年的成本比去年增加10%，但是仍保持原售价，因此每件利润下降了(1/4)，那么今年这种商品的成本占售价的几分之几？
<gadget id="calculator">11 / 14</gadget>
<output>11/14 = around 0.785714</output>

<result>11/14 = around 0.785714</result>