car travels from A to B at 40 kilometers per hour, and another car travels from B to A at 52 kilometers per hour. The two cars drive from both places at the same time and meet after 3 hours. How many kilometers are there between A and B?
一辆汽车从甲地开往乙地，每小时行40千米，另一辆汽车从乙地开往甲地，每小时行52千米，两车从两地同时开出3小时后相遇．甲乙两地相距多少千米？
<gadget id="calculator">40 + 52</gadget>
<output>92</output>

<gadget id="calculator">92 * 3</gadget>
<output>276</output>

<result>276</result>