(10,2) (2,5) (3.10/3) (4,5/2)
(12,2) (6,4) (3,8) (4,6)
(1,2) (2,1) (3.2/3) (4,1/2)
(81,9) (72,8) (63.7) (54,6)
(10,20) (5,40) (2.100) (1,200)
(1,5) (2,10) (3.15) (4,20)
(1,3) (2,6) (3.9) (4,12)
(10,2) (20,4) (30.6) (40,8)
(1,2) (2,4) (3.6) (4,8)
