A certain engineering team repaired a road. On the first day, it repaired the full length (3/10), and on the second day it repaired the remaining part (5/14). As a result, there were 81 kilometers left to be repaired. What is the total length of this road? rice.
某工程队修一条路，第一天修了全长的(3/10)，第二天修了剩下部分的(5/14)，结果还剩81千米没有修，这条路全长多少千米．
<gadget id="calculator">5 / 14</gadget>
<output>5/14 = around 0.357143</output>

<gadget id="calculator">1 - (5/14)</gadget>
<output>9/14 = around 0.642857</output>

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">81 / (9/14) / (7/10)</gadget>
<output>180</output>

<result>180</result>