Cars A and B start from A and B at the same time respectively, and travel back and forth between A and B continuously. The speed ratio of A and B is 3:5, and the distance between the 2001st meeting point and the 2002nd meeting point between A and B is 72 kilometers, so how many kilometers is the distance between A and B?
甲、乙两车分别从A、B两地同时出发，在A、B之间不断地往返行驶．甲、乙速度之比是3：5，并且甲、乙两车第2001次相遇点与第2002次相遇点相距72千米，那么A、B之间的路程是多少千米？
<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">(5/8) * 2</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(3/8) * 2</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(5/4) - (3/4)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">72 / (1/2)</gadget>
<output>144</output>

<result>144</result>