Răspuns :

4 dl=400 ml
19 dl=1900 ml
140 cl=1400 ml
28 l=28000 ml
480 cl=4800 ml
4dl=4x100=400ml
19dl=19x100=1900ml
140cl=140x10=1400ml
28l=28x1000=28000ml
450cl=450x10=4500ml