Jiang Xiaoqiang walked from his home to his aunt's house in the countryside. He walked the entire distance (2/7) in the first hour and the rest (7/15) in the second hour. It is known that he walked 300 meters more in the second hour than in the first hour. How many meters are the two apart?
江小强从家里徒步到乡下姑姑家，第一小时走了全程的(2/7)，第二小时走了余下的(7/15)，已知第二小时比第一小时多走300米．两家相距多少米？
<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">300 / (1/15)</gadget>
<output>4_500</output>

<result>4_500</result>