print('-'*5,'Python allows underscores "_" in numbers')
print(11_111_11)

print('-'*5,'Octal example')
print(0o77)

print('-'*5,'Hexadecimal example')
print(0x77)

print('-'*5,'Floats')
print(0.4)
print(.4)
print(4.0)
print(4.)

print('-'*5,'Scientific notation')
# 3x10^8 (It reads: three times ten to the power of eight)
print(3E8)
print(3e8)
# 6.62607 × 10−34
print(6.62607E-34)
# Python always chooses the more economical form of the number’s presentation,
print(0.0000000000000000000001)
print('-'*5)
