# Calculation a
a <- (5 * 4) ^ (4 * 5) - 56
print(a)
## [1] 1.048576e+26
# Calculation b
b <- 23 - 1 * (8 - 12)
print(b)
## [1] 27
# Calculation c
c <- 56 / 8 * (3 + 4)
print(c)
## [1] 49
# Calculation d
d <- 45 - 5 * 8 + (8 + 9)
print(d)
## [1] 22