A pile of coal has been transported away (3/4), and there are still 25 kilograms left. How many kilograms are there in this pile of coal?
一堆煤运走了(3/4)，还剩下25千克，这堆煤共有多少千克．
<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">25 / (1/4)</gadget>
<output>100</output>

<result>100</result>