barrel of oil is poured out (1/20), and exactly 10 kilograms are reduced. How many kilograms is this barrel of oil originally?
一桶油倒出(1/20)，正好减少了10千克，这桶油原来有多少千克？
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">10 / (1/20)</gadget>
<output>200</output>

<result>200</result>