A car drives from point A to point B at a speed of 68 kilometers per hour. After walking for 3 hours, it is still 25 kilometers away from the midpoint. How many kilometers are there between places A and B?
一辆汽车以每小时68千米的速度，从甲地开往乙地，走了3小时后，距离中点还有25千米，甲乙两地相距多少千米？
<gadget id="calculator">68 * 3</gadget>
<output>204</output>

<gadget id="calculator">204 + 25</gadget>
<output>229</output>

<gadget id="calculator">229 * 2</gadget>
<output>458</output>

<result>458</result>