It would take 12 days for Team A to repair a section of road alone, and 15 days for Team B to repair it alone. In order to repair the road as soon as possible, the two teams repaired it from both ends at the same time. How many meters is the total length?
一段公路如果甲队单独修要12天完成，乙队单独修要15天完成，为了尽快修通公路，两队从两端同时修，完工时甲队比乙队多修了2000米，这段公路全长多少米？
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(1/12) + (1/15)</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 / (3/20)</gadget>
<output>20/3 = around 6.666667</output>

<gadget id="calculator">(1/12) * (20/3)</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">(1/15) * (20/3)</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">(5/9) - (4/9)</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">2_000 / (1/9)</gadget>
<output>18_000</output>

<result>18_000</result>