The elder brother and the younger brother set off from home to school at the same time. The elder brother walks 225 meters per minute, and the younger brother walks 75 meters per minute. In this way, the elder brother arrives 9 minutes earlier than the younger brother. How far is it from home to school?
哥哥与弟弟同时从家出发到学校，哥哥每分钟走225米，弟弟每分钟走75米，这样哥哥比弟弟早到9分钟，从家到学校有多远？
<gadget id="calculator">1 / 75</gadget>
<output>1/75 = around 0.013333</output>

<gadget id="calculator">1 / 225</gadget>
<output>1/225 = around 0.004444</output>

<gadget id="calculator">(1/75) - (1/225)</gadget>
<output>2/225 = around 0.008889</output>

<gadget id="calculator">9 / (2/225)</gadget>
<output>2_025/2 = around 1_012.5</output>

<result>2_025/2 = around 1_012.5</result>