Li Hong rides a bicycle at a speed of 250 m/min, how many kilometers can he travel in an hour
李洪骑自行车的速度是250米/分，他1小时可行多少千米
<gadget id="calculator">60 / 1_000</gadget>
<output>3/50 = around 0.06</output>

<gadget id="calculator">250 * 1 * (3/50)</gadget>
<output>15</output>

<result>15</result>