A person rents a fruit warehouse at a monthly rent of 1,000 yuan, and stores 3 tons of fruit in it. By convention, these fruits need to be sold for two months. As a result of lowering the sales price, it was sold out in one month. Due to the savings in rent, after the settlement, I earned an extra 190 yuan. How much is it lower than planned per kilogram of fruit in sales?
某人以每月1000元的租金租用了一个果品仓库，存进去3吨水果．按照惯例，这些水果需要销售两个月．由于降低了销售价格，结果一个月就销售完了．由于节省了租金，结算下来，反而多赚了190元．销售时每千克水果比计划降低了多少元？
<gadget id="calculator">1_000 - 190</gadget>
<output>810</output>

<gadget id="calculator">3 * 1_000</gadget>
<output>3_000</output>

<gadget id="calculator">810 / 3_000</gadget>
<output>27/100 = around 0.27</output>

<result>27/100 = around 0.27</result>