A barrel of gasoline has 60 kilograms left after its (3/4) is used up. How many kilograms does this barrel of gasoline originally have?
一桶汽油用去它的(3/4)后还剩60千克，这桶汽油原来有多少千克．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">60 / (1/4)</gadget>
<output>240</output>

<result>240</result>