Xiaoyue and Dongdong set off from place A at the same time by bicycle and go in the same direction. Xiaoyue's speed is 4 kilometers per hour faster than Dongdong's speed, so Xiaoyue passes through place B on the way 20 minutes earlier than Dongdong. When Dongdong arrives at B, Xiaoyue has advanced another 8 kilometers. Find the distance between A and B.
小悦、冬冬骑车从甲地同时出发，同向而行，小悦的速度比冬冬的速度每小时快4千米，因此小悦比冬冬早20分钟通过途中的乙地，当冬冬到达乙地时，小悦又前进了8千米，求甲、乙两地之间的距离．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">8 / (1/3)</gadget>
<output>24</output>

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

<gadget id="calculator">24 * 2</gadget>
<output>48</output>

<gadget id="calculator">48 - 8</gadget>
<output>40</output>

<result>40</result>