The father and son were walking on a circular road. They started from the same place at the same time and walked opposite each other. They met after 14 minutes. It is known that the father walks 63 meters per minute, and the son walks 49 meters per minute. Find the length of this circular road.
父子二人在一条环形路上散步，他们同时从同一地点出发，相背而行，14分钟后两人相遇．已知父亲每分钟走63米，儿子每分钟走49米．求这条环形路的长度．
<gadget id="calculator">63 + 49</gadget>
<output>112</output>

<gadget id="calculator">112 * 14</gadget>
<output>1_568</output>

<result>1_568</result>