If 100 kilograms of seawater contains 4 kilograms of salt, how many kilograms of salt are contained in an average kilogram of seawater?
如果100千克海水中含盐4千克，平均每千克海水中含盐多少千克？
<gadget id="calculator">4 / 100</gadget>
<output>1/25 = around 0.04</output>

<result>1/25 = around 0.04</result>