The workers repaired the road, and the full length (3/8) has been repaired, and there is still 20 meters left, which is exactly half of the total length. How many meters have been repaired?
工人修路，已修全长的(3/8)，还差20米，正好修全长的一半，已修多少米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(1/2) - (3/8)</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">20 / (1/8)</gadget>
<output>160</output>

<gadget id="calculator">160 * (3/8)</gadget>
<output>60</output>

<result>60</result>