Cars A and B drive towards each other at AB respectively. Car A travels 60 kilometers first, and then Car B starts again. When the two cars meet, Car A travels 40% of the entire journey. It is known that the speed ratio of Cars A and B is 1: 3. How many miles is the distance between AB and AB?
甲乙两车分别在AB两地相向开出，甲车先行60千米后，乙车再出发，两车相遇时，甲车行了全程的40%，已知甲乙两车的速度比的1：3．则AB两地相距多少千米？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(3/5) / 3</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(2/5) - (1/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">60 / (1/5)</gadget>
<output>300</output>

<result>300</result>