A and B start from A and B at the same time, and walk towards each other. A walks (1/8) of the whole journey every hour. The ratio of the distance is 1:7, find out how long it takes for the two to meet each other.
甲乙俩人同时从A、B两地出发，相向而行甲每小时走全程的(1/8)，当甲走到全程的(1/4)处时，已走完的路程与未走的路程之比1：7，求两人从出发到相遇需要多长时间．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">5 / 16</gadget>
<output>5/16 = around 0.3125</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/4) / (1/8)</gadget>
<output>2</output>

<gadget id="calculator">(5/16) / 2</gadget>
<output>5/32 = around 0.15625</output>

<gadget id="calculator">(1/8) + (5/32)</gadget>
<output>9/32 = around 0.28125</output>

<gadget id="calculator">1 / (9/32)</gadget>
<output>32/9 = around 3.555556</output>

<result>32/9 = around 3.555556</result>