A piece of rope, cut off (1/2), and there is (1/2) meter left, how many meters is the original length of this rope?
一根绳子，剪去它的(1/2)，还剩下(1/2)米，这根绳子原来长多少米．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) / (1/2)</gadget>
<output>1</output>

<result>1</result>