How many kilometers is it to run 10 laps along a 400-meter runway?
沿着400米的跑道跑10圈是多少千米．
<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>