and B walk towards each other from two places 60 kilometers apart at the same time, and meet each other 6 hours later. If the speed of the two increases by 1 km per hour, then the meeting point is 2 km away from the previous meeting point. What is A's speed in kilometers per hour?
甲、乙二人从相距60千米的两地同时相向而行，6小时后相遇．如果二人的速度每小时各增加1千米，那么相遇地点距前一次相遇地点2km．甲的速度是每小时多少千米．
<gadget id="calculator">60 / 6</gadget>
<output>10</output>

<gadget id="calculator">1 * 2</gadget>
<output>2</output>

<gadget id="calculator">10 + 2</gadget>
<output>12</output>

<gadget id="calculator">60 / 12</gadget>
<output>5</output>

<gadget id="calculator">5 + 2</gadget>
<output>7</output>

<gadget id="calculator">60 / 10</gadget>
<output>6</output>

<gadget id="calculator">6 - 5</gadget>
<output>1</output>

<gadget id="calculator">7 / 1</gadget>
<output>7</output>

<result>7</result>