Two ropes of the same length, one cut off (1/2) and the other cut off (1/2) meters, then the remaining two ropes are still the same length. How long were the two ropes originally?
两根同样长的绳子，一根剪去它的(1/2)，另一根剪去(1/2)米，这时剩下的两段绳子仍是同样长．这两根绳原来长多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 - 1</gadget>
<output>0</output>

<gadget id="calculator">(1/2) + 0</gadget>
<output>1/2 = around 0.5</output>

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

<result>1</result>