28b....................35d...................1078
14b.....................30d...................765 /x2
28b............35d.........1078
28b.............60d........1530
1530-1078=452(25d)
452:25=18,08(d)
18,08x30=542,4(30d)
765-542,4=222,6(14b)
222,6:14=15,9(b).
R:b=15,8
. d=18,08
B=bilete 2D
D=bilete 3D