There is half a barrel of oil in an oil barrel, first use up 60%, and then pour 10 kilograms of oil into it. At this time, there is as much oil in the barrel as before. How many kilograms of oil can this barrel hold?
一只油桶里装有半桶油，先用去60%，再倒入10千克油，这时桶里的油和原来一样多．这个桶能装多少千克油？
<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">10 / (3/5)</gadget>
<output>50/3 = around 16.666667</output>

<gadget id="calculator">(50/3) * 2</gadget>
<output>100/3 = around 33.333333</output>

<result>100/3 = around 33.333333</result>