Due to the traffic jam caused by the maintenance of the Baishazhou Bridge in Wuhan, the speed of someone getting on the bus is reduced (1/7), so how much does his time on the road increase?
因武汉白沙洲大桥维修造成堵车，某人上班车速降低了(1/7)，那么他在路上的时间增加了多少
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">(1/6) - (1/7)</gadget>
<output>1/42 = around 0.02381</output>

<gadget id="calculator">(1/42) / (1/7)</gadget>
<output>1/6 = around 0.166667</output>

<result>1/6 = around 0.166667</result>