Two cars go from A at the same time. The two cities B are walking towards each other, and they meet at a distance of 52 kilometers from city A. After arriving at the other city, they immediately return at the same speed, and meet again at a distance of 44 kilometers from city A. How many kilometers are the original distance between the two cities?
两辆汽车同时从A．B两城相向而行，在离A城52千米处相遇，到达对方城市后立即以原速原路返回，又在离A城44千米处相遇，求原来两城相距多少千米？
<gadget id="calculator">52 * 3</gadget>
<output>156</output>

<gadget id="calculator">156 + 44</gadget>
<output>200</output>

<gadget id="calculator">200 / 2</gadget>
<output>100</output>

<result>100</result>