A steel pipe is 8 meters long, if (3/4) of it is used up, how many meters will be used up?
一根钢管长8米，用去它的(3/4)，用去多少米．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">8 * (3/4)</gadget>
<output>6</output>

<result>6</result>