Teacher Li rides a bicycle at 400 meters per minute, how many kilometers does he travel in 10 minutes?
李老师骑自行车每分钟行400米，10分钟行多少千米．
<gadget id="calculator">10 / 1_000</gadget>
<output>1/100 = around 0.01</output>

<gadget id="calculator">400 * (1/100)</gadget>
<output>4</output>

<result>4</result>