A and B start from A and B respectively at the same time, walk towards each other, and meet after 10 hours. If they both travel less than 2 kilometers per hour, they will meet after 12 hours. Question: How many miles is the distance between A and B?
甲、乙两人分别从A，B两地同时出发，相向而行，10小时后相遇，如果两人每小时都少行2千米，那么12小时后才能相遇．问：A，B两地间相距多少千米？
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">12 - 10</gadget>
<output>2</output>

<gadget id="calculator">12 / 2</gadget>
<output>6</output>

<gadget id="calculator">4 * 6</gadget>
<output>24</output>

<gadget id="calculator">24 * 10</gadget>
<output>240</output>

<result>240</result>