Two people, A and B, start from A and B at the same time and walk towards each other. It is known that A is faster than B, and the two meet at point C on the way in 8 hours. If the speed of the two people increases by 2 kilometers each, then the meeting time can be shortened by 2 hours, and the meeting point D is 3 kilometers away from point C. Seeking A's original speed?
甲、乙两人分别从A、B两地同时出发相向面行．已知甲的速度比乙快，8小时两人在途中C点相遇．如果两人的速度各增加2千米，那么相遇时间可缩短2小时，且相遇点D距C点3千米．求甲原来的速度？
<gadget id="calculator">8 - 2</gadget>
<output>6</output>

<gadget id="calculator">2 * 6</gadget>
<output>12</output>

<gadget id="calculator">12 + 3</gadget>
<output>15</output>

<gadget id="calculator">15 / 2</gadget>
<output>15/2 = around 7.5</output>

<result>15/2 = around 7.5</result>