batch of coal is transported into the canteen. If 40% of this batch of coal is used up and the rest is 200 kg more than what was used, how many kilograms of coal was originally transported into the canteen?
食堂运进一批煤，如果用去这批煤的40%，剩下的比用去的多200千克，那么食堂原来运进煤多少千克？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5) - (2/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">200 / (1/5)</gadget>
<output>1_000</output>

<result>1_000</result>