Below is an article from Wikipidea that briefly describes the history of the Brazilian Currency over the years.
The official Brazilian currency since 1994 is the Brazilian real (plural reais, sign R$, code BRL).
Through its history, Brazil had a number of other currencies:
Brazilian real (old) (Rs$), pl. réis; from colonial times to 1942
cruzeiro (first) (₢, Cr$) = 1,000 réis; from 1942 to 1967.
cruzeiro novo (NCr$) = 1,000 cruzeiros; from 1967 to 1970
cruzeiro (second) (Cr$) = 1 cruzeiro novo; from 1970 to 1986
cruzado (Cz$) = 1,000 cruzeiros novos; from 1986 to 1989
cruzado novo (NCz$) = 1,000 cruzados; from January 1989 to March 1990
cruzeiro (third) (Cr$) = 1,000 cruzados novos; from 1990 to 1993
cruzeiro real = 1,000 cruzeiros; from August 1993 to June 1994
real (modern) (R$), pl. reais = 2,750 cruzeiros reais; from 1994 to present
Thus, one modern Brazilian real is equivalent to 2,750,000,000,000,000,000,000 times the old real, that is, 2.75 sextillion réis.