A passenger car and a freight train depart from two stations at a distance of 530 kilometers at the same time. After meeting each other for 4 hours, it is known that the passenger car travels 70 kilometers per hour. How many kilometers per hour does the freight train travel?
客车和货车同时从相距530千米的两个车站相对开出，经过4小时相遇，已知客车每小时行70千米，货车每小时行多少千米？
<gadget id="calculator">530 / 4</gadget>
<output>265/2 = around 132.5</output>

<gadget id="calculator">(265/2) - 70</gadget>
<output>125/2 = around 62.5</output>

<result>125/2 = around 62.5</result>