The state stipulates that after the price of a certain type of gasoline increases by 1,000 yuan per ton, it will be sold at 6,000 yuan per ton. How much does the price of gasoline increase per ton?
国家规定，某种汽油每吨涨价1000元后卖6000元每吨，汽油每吨价格上涨了百分之几？
<gadget id="calculator">6_000 - 1_000</gadget>
<output>5_000</output>

<gadget id="calculator">1_000 / 5_000</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>