500ml= 0.5L
25cg= 0.25g
also just so you know in the future the conversion factor for 0.01. So 1 Centigram(cg) is equal to 0.01 grams. so the value of Centigram (Cg) divided by 100 gives you the value of Grams(g)
example
if you had 45cg and needed to convert it to grams you would do
45/100
and you’d get
45cg= 0.45g