Cars A and B start from opposite sides of AB at the same time. After 3 hours, the distance between the two cars is still 120 kilometers. After another 3 hours, the distance between the two cars is 120 kilometers. How many kilometers is the distance between AB and AB?
甲乙两车同时从AB两地相向出发，3小时后，两车还相距120千米，又行3小时，两车又相距120千米，AB两地相距多少千米？
<gadget id="calculator">120 + 120</gadget>
<output>240</output>

<gadget id="calculator">240 / 3</gadget>
<output>80</output>

<gadget id="calculator">80 * 3</gadget>
<output>240</output>

<gadget id="calculator">240 + 120</gadget>
<output>360</output>

<result>360</result>