A coal mine produced 1200 tons of coal in August, and produced 300 tons more in September than in August. How much is the increase in September compared with August?
某煤矿八月份产煤1200吨，九月份比八月份多生产300吨，九月份比八月份增产多少．
<gadget id="calculator">300 / 1_200</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>