48% of a bag of flour is used up, how much is left?
一袋面粉，用去了48%，还剩多少．
<gadget id="calculator">48 / 100</gadget>
<output>12/25 = around 0.48</output>

<gadget id="calculator">1 - (12/25)</gadget>
<output>13/25 = around 0.52</output>

<result>13/25 = around 0.52</result>