f=lambda i:map(round,[i,i*4/3,i*8/9,i*8/9+1])

# code length output:
print("This Python 3 code is {} bytes long.".format(len(
'f=lambda i:map(round,[i,i*4/3,i*8/9,i*8/9+1])'
)))

# tests:
print(9, list(f(9)), [9, 12, 8, 9])