Two planes are flying relative to each other at the same time from two places 5,000 kilometers apart. After 4 hours, the distance between the two planes is still 200 kilometers. Plane A flies 675 kilometers per hour. How many kilometers does Plane B fly per hour?
两架飞机从相距5000千米的两地同时相对飞行，4小时后两架飞机还相距200千米，甲飞机每小时飞行675千米，乙飞机每小时飞行多少千米？
<gadget id="calculator">5_000 - 200</gadget>
<output>4_800</output>

<gadget id="calculator">4_800 / 4</gadget>
<output>1_200</output>

<gadget id="calculator">1_200 - 675</gadget>
<output>525</output>

<result>525</result>