Big Big Wolf and his son Hui Hui start from point A and walk along the same route to point B at the same time. Big Big Wolf walks at a speed of 5 kilometers per hour for half of the time and 4 kilometers per hour for the other half of the time. Huihui travels half of the distance at a speed of 5 kilometers per hour, and the other half travels at a speed of 4 kilometers per hour. If the time difference between their arrival at point B is 10 minutes, then how many kilometers are the distances between A and B?
灰太狼和儿子灰灰同时从A地出发沿同一路线走到B地，灰太狼有一半时间以每小时5千米的速度行走，另一半时间以每小时4千米的速度行走．灰灰有一半的路程以每小时5千米的速度行走，另一半路程以每小时4千米的速度行走．若它们到达B地的时间相差10分钟，那么A、B两地的路程是多少千米．
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">(1/8) - (2/9)</gadget>
<output>-7/72 = around -0.097222</output>

<gadget id="calculator">(1/10) + (-7/72)</gadget>
<output>1/360 = around 0.002778</output>

<gadget id="calculator">(1/6) / (1/360)</gadget>
<output>60</output>

<result>60</result>