On Converting between Arabic and Roman Numbers ,we get :
LX in roman numerals is :
60
DCLXVIII = 668
1000
XLII = 42
DCCLXXIII
MCMLXXXV
VII is seven=7.
XXXII = 32
MM
lx in the thunderbirds means Luxury edition.
It is: cmxx or CMXX = 920
XXXIII
45 because -10+55 = XLV