A barrel of peanut oil, poured out (1/4), how much is left?
一桶花生油，倒出(1/4)，还剩几分之几？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>