A passenger car and a truck travel towards each other from places A and B at the same time, and meet each other in 5 hours. After meeting, the bus travels for another 3 hours to reach point B. It is known that the truck travels 63 kilometers per hour, how many kilometers per hour does the passenger car travel?
客车和货车同时从甲、乙两地相向而行，5小时相遇，相遇后客车又行了3小时到达乙地，已知货车每小时行63千米，客车每小时行多少千米？
<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">63 * (5/3)</gadget>
<output>105</output>

<result>105</result>