145 hl = 14500 l
540 dal = 5400 l
37 hl = 3700 l
I b /----/ + 5400
II b /----/ + 3700 } 14500
III b /----/ + 4500
14500 - ( 5400 +3700 + 4500) = 14500 -13600 = 900
900 : 3 = 300
I b = 5400 + 300 = 5700 l
II b = 3700 + 300 = 4000 l
III b = 4500 + 300 = 4800 l