A car drives from place A to place B at a speed of 56 kilometers per hour. After 3.6 hours, it is still 2.9 kilometers away from the midpoint of places A and B. Find the distance between A and B.
一辆汽车以每小时56千米的速度从甲地开往乙地，3.6小时后，离甲、乙两地的中点还有2.9千米．求甲乙两地的距离．
<gadget id="calculator">56 * 3.6</gadget>
<output>201.6</output>

<gadget id="calculator">201.6 + 2.9</gadget>
<output>204.5</output>

<gadget id="calculator">204.5 * 2</gadget>
<output>409</output>

<result>409</result>