A rope is (3/4) meters long, after cutting (1/4) of the total length, how many meters are left
一根绳子长(3/4)米，截去全长的(1/4)后，还剩多少米
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<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>

<gadget id="calculator">(3/4) * (3/4)</gadget>
<output>9/16 = around 0.5625</output>

<result>9/16 = around 0.5625</result>