The express train departs from point A and the slow train departs from point B at the same time, and they meet each other after 4 hours. After meeting, they continue to move forward at the same speed, and after another 5 hours, the slow train arrives at point A. At this time, the express train has exceeded 90 kilometers from point B. How many kilometers apart?
快车从A地慢车从B地同时出发，相向而行，经过4小时相遇，相遇后仍按原速度前进，又经过5小时慢车到达A地，这时快车已超过B地90千米，两地相距多少千米？
<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(5/4) - 1</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">90 / (1/4)</gadget>
<output>360</output>

<result>360</result>