A power plant burned 2,000 tons of coal last month and 2,250 tons this month. What percentage increase?
某发电厂上月烧煤2000吨，本月烧煤2250吨，增产了百分之几？
<gadget id="calculator">2_250 - 2_000</gadget>
<output>250</output>

<gadget id="calculator">250 / 2_000</gadget>
<output>1/8 = around 0.125</output>

<result>1/8 = around 0.125</result>