The road repair team repaired a section of road. On the first day, 40% of the total length was repaired, and on the second day, 1/2 of the total length was repaired. The first day was 150 meters shorter than the second day. What is the total length of this section of road? rice?
修路队修一段公路，第一天修了全长的40%，第二天修了全长的(1/2)，第一天比第二天少修150米，这段公路全长是多少千米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(1/2) - (2/5)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">150 / (1/10) / 1_000</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>