Rent a warehouse to stack 5 tons of goods, and the monthly rent is 6,000 yuan. This batch of goods was originally expected to be sold for 2 months, but the price was lowered, and the goods were sold out in 1 month. Since I saved one month's rent, I earned 1,000 yuan more than the original sales plan after the settlement. Q: How much is the price per kilogram of goods reduced?
租用仓库堆放5吨货物，每月租金6000元．这批货物原来估计要销售2个月，后因降低了价格，结果1个月就销售完了．由于节省了一个月的租金，所以结算下来反而比原来销售计划多赚了1000元．问：每千克货物价格降低了多少元？
<gadget id="calculator">6_000 - 1_000</gadget>
<output>5_000</output>

<gadget id="calculator">5 * 1_000</gadget>
<output>5_000</output>

<gadget id="calculator">5_000 / 5_000</gadget>
<output>1</output>

<result>1</result>