There is a 500-meter lap on the school playground. Xiao Ming insists on running 4 laps every day. How many kilometers does Xiao Ming run every day?
学校运动场跑道一圈有500米，小明坚持每天跑4圈，小明每天跑多少千米？
<gadget id="calculator">4 / 1_000</gadget>
<output>1/250 = around 0.004</output>

<gadget id="calculator">500 * (1/250)</gadget>
<output>2</output>

<result>2</result>