Two road construction teams, A and B, are building a road from both ends at the same time, and they meet at a distance of 15 kilometers from the midpoint. It is known that team B has repaired 40% of the total length. How many kilometers is the total length of this road?
甲乙两个修路队同时从两端修一条公路，在距离中点15千米处相遇，已知乙队修了全长的40%，这段公路全长多少千米？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5) - (2/5)</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">15 * 10</gadget>
<output>150</output>

<result>150</result>