Workers have repaired the road, and the full length (3/5) has been repaired. It exceeds the midpoint by 20 meters. How many meters have been repaired?
工人修路，已修全长的(3/5)，超过中点20米，已修多少米？
<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>1/10 = around 0.1</output>

<gadget id="calculator">20 / (1/10)</gadget>
<output>200</output>

<gadget id="calculator">200 * (3/5)</gadget>
<output>120</output>

<result>120</result>