Two trains travel towards each other at the same time from two places 536 kilometers away, and meet each other in 4 hours. The slow train travels 60 kilometers per hour. How many kilometers per hour does the express train travel?
两列火车同时从距离536千米的两地相向而行，4小时相遇，慢车每小时行60千米，快车每小时行多少千米？
<gadget id="calculator">536 / 4</gadget>
<output>134</output>

<gadget id="calculator">134 - 60</gadget>
<output>74</output>

<result>74</result>