A 3-meter-long rope, first cut (1/2) of it, and then connect (1/2) meter, how many meters is the length of the rope at this time?
一根3米长的绳子，先截下它的(1/2)，再接上(1/2)米，这时绳子长多少米米．
<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">3 * (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(3/2) + (1/2)</gadget>
<output>2</output>

<result>2</result>