From A to B, Xiao Zhang needs 2 hours to complete the journey, and Xiao Li takes 1 hour to complete the journey. If Xiao Zhang and Xiao Li start from A to B at the same time, later, at a certain moment, Xiao Zhang does not The distance traveled is exactly twice the distance that Xiaoli traveled, so how many minutes did they walk at this time?
从甲地到乙地，小张走完全程要2小时，小李走完全程要1小时，如果小张和小李同时从甲地出发去乙地，后来，在某一时刻，小张未走的路程恰好是小李为走的路程的2倍，那么此时他们走了多少分钟．
<gadget id="calculator">1 / 120</gadget>
<output>1/120 = around 0.008333</output>

<gadget id="calculator">1 / 60</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">(1/60) * 2</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(1/120) + (1/30)</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">1 / (1/24)</gadget>
<output>24</output>

<result>24</result>