1,(8) = 17/9
0,8 = 8/10 = 4/5
9,(4) = 85/9
8,(3) = 75/9 = 25/3
a= 9k/17
b = 5k/4
c = 9k/85
c = 3k/25
9k/17+5k/4+9k/85+3k/25=3409 / x 1700 (17x4x25)
900k+2125k+180k+204k=3409x1700
3409k=5795300
k = 5795300 : 3409
k=1700
a = 9k/17= 9 x 1700/17 = 900
b = 5k/4 = 5 x 1700/4 = 2125
c = 9k/85 = 9 x 1700/85 = 180
d = 3k/25 = 3 x 1700/25 = 204