8 kilograms of flour, eat (3/4) of it, how many kilograms are left.
8千克面粉，吃掉了它的(3/4)，还剩多少千克．
<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">8 * (1/4)</gadget>
<output>2</output>

<result>2</result>