Places A and B are the starting stations of trams, and a tram will be dispatched from each of the two places at regular intervals. Xiao Zhang and Xiao Wang set off from places A and B respectively by bicycle, and head towards each other. Every tram meets an oncoming tram every 4 minutes; Xiao Zhang meets an oncoming tram every 5 minutes; Xiao Wang meets an oncoming tram every 6 minutes. It is known that the whole journey of the tram is 56 minutes, so how many minutes did Xiao Zhang and Xiao Wang walk when they met on the way?
甲、乙两地是电车始发站，每隔一定时间两地同时各发出一辆电车．小张和小王分别骑车从甲、乙两地出发，相向而行．每辆电车都隔4分遇到迎面开来的一辆电车；小张每隔5分遇到迎面开来的一辆电车；小王每隔6分遇到迎面开来的一辆电车．已知电车行驶全程是56分，那么小张与小王在途中相遇时他们已行走了多少分？
<gadget id="calculator">1 / 4 / 2</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) - (1/8)</gadget>
<output>3/40 = around 0.075</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

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

<gadget id="calculator">(3/40) + (1/24)</gadget>
<output>7/60 = around 0.116667</output>

<gadget id="calculator">56 / (7/60)</gadget>
<output>480</output>

<gadget id="calculator">(1/8) * 480</gadget>
<output>60</output>

<result>60</result>