The distance between the two places is 11.7 kilometers. A and B start from the two places at the same time and walk toward each other. A travels 3.6 kilometers per hour and B travels 4.2 kilometers per hour. How far is the distance between the meeting point and the midpoint of the journey? rice?
两地间路程为11.7千米，甲、乙两人分别同时从两地出发相向而行，甲每小时行3.6千米，乙每小时行4.2千米，那么两人相遇点离全程中点多少米？
<gadget id="calculator">6.75 - 5.85</gadget>
<output>0.9</output>

<gadget id="calculator">0.9 * 1_000</gadget>
<output>900</output>

<result>900</result>