Two people, A and B, compete in a cycling race. Start at the same time. When A rides to the whole journey (7/8). When B rides to the full distance (5/6), the distance between the two is 70 meters, how much is the whole journey?
甲、乙两人进行骑车比赛．同时出发．当甲骑到全程的(7/8)．乙骑到全程的(5/6)时，这时两人相距70米，全程多少．
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">(7/8) - (5/6)</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">70 / (1/24)</gadget>
<output>1_680</output>

<result>1_680</result>