Two engineering teams, A and B, are contracted to repair a section of road. If A’s engineering team repairs it alone, the whole process will be repaired in 30 days (6/15); if B’s engineering team repairs it alone, it will be repaired in 20 days (2/5). It is known that engineering team A repairs 12 meters less than engineering team B every day. How long is this road in meters?
甲乙两个工程队承包维修一段公路，如果由甲工程队单独修，30天修了全程的(6/15)；如果由乙工程队单独修，20天修了全程的(2/5)．已知甲工程队每天比乙工程队少修12米，这段公路长多少米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) / 20</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">6 / 15</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) / 30</gadget>
<output>1/75 = around 0.013333</output>

<gadget id="calculator">(1/50) - (1/75)</gadget>
<output>1/150 = around 0.006667</output>

<gadget id="calculator">12 / (1/150)</gadget>
<output>1_800</output>

<result>1_800</result>