Each pack of beef jerky is 400 grams, how many kilograms are 5 packs of such beef jerky.
每包牛肉干400克，5包这样的牛肉干多少千克．
<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>