To build a road, the full length (2/7) was repaired in the first week, and 51m was repaired in the second week compared with the first week, and the remaining 99m was not repaired. What is the total length of the road in m?
修一条公路，第一周修了全长的(2/7)，第二周比第一周多修了51m，剩下99m没修，这条公路全长多少m．
<gadget id="calculator">99 + 51</gadget>
<output>150</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 - (2/7) - (2/7)</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">150 / (3/7)</gadget>
<output>350</output>

<result>350</result>