A． The distance between two places B is 442 kilometers. Two cars A and B leave from the two stations at the same time. Car A travels 40 kilometers per hour, and car B travels 45 kilometers per hour. A pigeon starts at the same time as car A at a speed of 50 kilometers per hour, flies to car B, turns back and flies to car B when it meets car B, and flies back to car B when it meets car A, and keeps flying like this. How many kilometers must the two cars meet?
A．B两地相距442千米，甲乙两车同时从两站相对开出，甲车每小时行40千米，乙车每小时行45千米．一只鸽子以每小时50千米的速度和甲车同时出发，向乙飞去，遇到乙又折回向甲飞去，遇到甲到往回飞向乙车，这样一直飞下去，鸽子飞了多少千米两车才能相遇？
<gadget id="calculator">40 + 45</gadget>
<output>85</output>

<gadget id="calculator">442 / 85</gadget>
<output>26/5 = around 5.2</output>

<gadget id="calculator">50 * (26/5)</gadget>
<output>260</output>

<result>260</result>