Grandpa runs for 25 minutes every morning. His speed is about 180 m/min. How many meters does grandpa run every morning?
爷爷每天早上跑步25分钟，他的速度大约是180米/分，爷爷每天早上跑步多少米？
<gadget id="calculator">180 * 25</gadget>
<output>4_500</output>

<result>4_500</result>