A wire is 60 meters long, if (3/4) is used up, how many meters are left?
一根铁丝长60米，用去(3/4)，还剩下多少米？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">60 * (3/4)</gadget>
<output>45</output>

<gadget id="calculator">60 - 45</gadget>
<output>15</output>

<result>15</result>