A factory used 250 tons of coal in March, 50 tons more than planned. How much was the excess in March?
某厂三月份用煤250吨，超过计划50吨，三月份超用了多少
<gadget id="calculator">250 - 50</gadget>
<output>200</output>

<gadget id="calculator">50 / 200</gadget>
<output>1/4 = around 0.25</output>

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