The distance between A and B is 2513 kilometers. Two trains depart from the two cities at the same time. The train from A city travels 74.5 kilometers per hour, and the train from B city travels 72.5 kilometers per hour. 12 After one hour, how many kilometers are the distance between the two cars?
A、B两地相距2513千米，两列火车同时从两城相对开出，从A城开出的火车每小时行74.5千米，从B城开出的火车每小时行72.5千米，12小时后，两车相距多少千米？
<gadget id="calculator">74.5 + 72.5</gadget>
<output>147</output>

<gadget id="calculator">147 * 12</gadget>
<output>1_764</output>

<gadget id="calculator">2_513 - 1_764</gadget>
<output>749</output>

<result>749</result>