input: Write a function to validate a decimal number with exactly two places after the decimal point.
  assert validate_decimal('123.11')==True
  assert validate_decimal('e666.86')==False
  assert validate_decimal('3.124587')==False
output: def validate_decimal(number):
      try:
          parts = number.split('.')
          if len(parts) == 2 and len(parts[1]) == 2:
              float(number)
              return True
          else:
              return False
      except ValueError:
          return False