Xiaohong goes to school by bicycle every morning, can walk 150 meters per minute, and can reach school in half an hour. How far is Xiaohong's home from school?
小红每天早晨骑自行车去上学，每分钟能行150米，半小时可以到达学校．请问小红家离学校有多远？
<gadget id="calculator">150 * 30</gadget>
<output>4_500</output>

<result>4_500</result>