Cars A and B are traveling toward each other from a distance of 516 kilometers. After driving for 6 hours, car B is suspended for maintenance. At this time, the distance between the two cars is 72 kilometers. Car A maintains the original speed and then meets with car B after 2 hours. meet. Find the speed of car B.
甲、乙两车从相距516千米的两地相向而行，行驶6小时后，乙车暂停修理，这时两车相距72千米，甲车保持原来的速度再行2小时后与乙车相遇．求乙车的速度．
<gadget id="calculator">516 - 72</gadget>
<output>444</output>

<gadget id="calculator">444 / 6</gadget>
<output>74</output>

<gadget id="calculator">72 / 2</gadget>
<output>36</output>

<gadget id="calculator">74 - 36</gadget>
<output>38</output>

<result>38</result>