A rope is cut off (1/2) and there is exactly 2 meters left, what is the length of this rope in meters?
一条绳子剪去(1/2)正好还剩2米，这根绳子长是多少米．
<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">2 / (1/2)</gadget>
<output>4</output>

<result>4</result>