The distance between two places is 420 kilometers. Cars A and B start from the two places at the same time and drive towards each other. When they meet, the distance traveled by car A is (1/4) longer than the distance traveled by car B (1/4) 15 kilometers. Then, how many kilometers did the cars A and B travel?
两地相距420千米，甲、乙两车从两地同时出发，相向而行，相遇时，甲车所行路程的(1/4)比乙车所行的路程的(1/4)多15千米．则甲、乙两车各行了多少千米？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">15 / (1/4)</gadget>
<output>60</output>

<gadget id="calculator">420 + 60</gadget>
<output>480</output>

<gadget id="calculator">480 / 2</gadget>
<output>240</output>

<gadget id="calculator">420 - 240</gadget>
<output>180</output>

<result>180</result>