To build a road, (3/5) meters have been completed, and the remaining (1/2) is the remaining (1/2), how many meters in total? What is the correct column
修一条公路，已经完成了(3/5)米，是余下的(1/2)，全程共多少米？正确列式是多少
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">(3/5) / (1/2)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(6/5) + (3/5)</gadget>
<output>9/5 = around 1.8</output>

<result>9/5 = around 1.8</result>