I rented a warehouse to stack 2 tons of goods, and the monthly rent is 6,000 yuan. These goods were originally expected to be sold for 2 months. Due to the lower price, they were sold out in one month, so the rent was saved. After settlement, I made an extra 1,000 yuan. , How much is the price reduction per kilogram of goods?
租用仓库堆放2吨货物，每月租金是6000元，这些货物原来估计要销售2个月，由于降低了价格，结果一个月就销售完了，因此节省了租金，结算下来，反而多赚了1000元，每千克货物降价多少元？
<gadget id="calculator">6_000 + 6_000</gadget>
<output>12_000</output>

<gadget id="calculator">2 * 1_000</gadget>
<output>2_000</output>

<gadget id="calculator">12_000 / 2_000</gadget>
<output>6</output>

<gadget id="calculator">6_000 + 1_000</gadget>
<output>7_000</output>

<gadget id="calculator">7_000 / 2_000</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">6 - (7/2)</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>