The part of a utility pole buried in the soil accounts for 14% of the total length, and 12.9 meters are exposed above the ground. How long is this utility pole in meters?
一根电线杆埋入土中的部分占全长的14%，露出地面有12.9米，这根电线杆长多少米？
<gadget id="calculator">14 / 100</gadget>
<output>7/50 = around 0.14</output>

<gadget id="calculator">1 - (7/50)</gadget>
<output>43/50 = around 0.86</output>

<gadget id="calculator">12.9 / (43/50)</gadget>
<output>15</output>

<result>15</result>