A and B are riding bicycles and start at the same time. When A rides to the full distance (7/8), B rides to the full distance (6/7). At this time, the distance between the two is 140 meters. If they continue to ride at their respective speeds, what is the maximum distance between the two when A reaches the end point?
甲、乙两人进行骑自行车比赛，同时出发，当甲骑到全程的(7/8)时，乙骑到全程的(6/7)，这时两人相距140米．如果继续按各自的速度骑下去，当甲骑到终点时，两人最大距离是多少米．
<gadget id="calculator">7 / 8</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">(7/8) - (6/7)</gadget>
<output>1/56 = around 0.017857</output>

<gadget id="calculator">140 / (1/56)</gadget>
<output>7_840</output>

<gadget id="calculator">(7/8) / (6/7)</gadget>
<output>49/48 = around 1.020833</output>

<gadget id="calculator">1 / (49/48)</gadget>
<output>48/49 = around 0.979592</output>

<gadget id="calculator">1 - (48/49)</gadget>
<output>1/49 = around 0.020408</output>

<gadget id="calculator">7_840 * (1/49)</gadget>
<output>160</output>

<result>160</result>