Brother Xiong and Brother Xiong go to the advertising company from their own homes to work each morning. They spend 15 minutes to get to the office every morning. Please help them calculate how far is the distance between Brother Xiong and Brother Xiong? Brother Xiong walks 18 meters per minute, and Brother Xiong walks 23 meters per minute. The company is between them.
熊哥和熊弟每天早晨分别从自己家中到广告公司上班，他们呢每天早晨都用15分钟到公司，请帮他们算一算，熊哥与熊弟两家相距多远？熊哥每分钟走18米，熊弟每分钟走23米，公司就在他们两家之间．
<gadget id="calculator">18 + 23</gadget>
<output>41</output>

<gadget id="calculator">41 * 15</gadget>
<output>615</output>

<result>615</result>