A barrel of gasoline is poured out (3/4), and there are 6 kilograms left. How many kilograms does this barrel of gasoline originally have?
一桶汽油倒出(3/4)，还剩下6千克，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">6 / (1/4)</gadget>
<output>24</output>

<result>24</result>