The road repair team repaired a road. On the first day, the full length (1/15) was repaired by 2km, and on the second day, the full length (1/10) was repaired by 6km, leaving 124km. How long is this road in kilometers?
修路队修一条公路，第一天修了全长的(1/15)多2km，第二天修了全长的(1/10)少6km，还剩124km，这条公路全长多少km？
<gadget id="calculator">124 - 6</gadget>
<output>118</output>

<gadget id="calculator">118 + 2</gadget>
<output>120</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/15) - (1/10)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">120 / (5/6)</gadget>
<output>144</output>

<result>144</result>