One lap of the sports field is 400 meters. Xiao Jiang insists on running 5 laps every day. How many kilometers does he run every day?
运动场跑道一圈是400米，小江坚持每天跑5圈，他每天跑多少千米？
<gadget id="calculator">5 / 1_000</gadget>
<output>1/200 = around 0.005</output>

<gadget id="calculator">400 * (1/200)</gadget>
<output>2</output>

<result>2</result>