The distance between Port A and Port B is 665km. At 9:00 am, the "Hanshan" speedboat departs from Port A to Port B, and the "Tianyuan" speedboat departs from Port B to Port A. Traveling 45km, how many kilometers per hour is "Tianyuan" faster than "Hanshan"?
甲港和乙港相距665km，上午9时"寒山"号快艇甲港开往乙港，"天远"号快艇从乙港开往甲港，到16时两艇相遇，"寒山"号每小时行45km，"天远"号时速比"寒山"号快多少千米？
<gadget id="calculator">16 - 9</gadget>
<output>7</output>

<gadget id="calculator">665 / 7</gadget>
<output>95</output>

<gadget id="calculator">95 - 45 - 45</gadget>
<output>5</output>

<result>5</result>