Two ships A and B depart from ports A and B. After 5 hours, the two ships meet. It is known that ship A travels 52 kilometers per hour, and the speed ratio of ship A to ship B is 4:3. Find A , The distance between the two ports of B.
甲、乙两艘轮船从A、B两个港口出发，经5个小时后，两轮船相遇，已知甲轮船每小时行52千米，它与乙轮船的速度比为4：3，求甲、乙两港间距离．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">52 * (3/4)</gadget>
<output>39</output>

<gadget id="calculator">52 + 39</gadget>
<output>91</output>

<gadget id="calculator">91 * 5</gadget>
<output>455</output>

<result>455</result>