The passenger car and the freight car are traveling towards each other from A and B at the same time. The freight car travels 60 kilometers per hour, and the passenger car travels the whole journey (1/15) per hour. When they meet, the ratio of the distance traveled by the two vehicles is 4:5 ． Find the distance between A and B in kilometers?
客车和货车同时从A、B两地相向而行，货车每小时行60千米，客车每小时行全程的(1/15)，相遇时，客货两车所行的路程比是4：5．求A、B两地相距多少千米？
<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">5 / 4</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">(1/15) * (5/4)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">60 / (1/12)</gadget>
<output>720</output>

<result>720</result>