<human>:  round or cast to int.
<bot>: Here is a Python code to round or cast to integer

import math

def round_int(number):
  """
  Round or cast to int
  """
  if isinstance(number, int):
    return number
  else:
    return int(number)

# Enter the number
number = 12.3456789

# Calling the function
print((round_int(number)))

#Example Output
# 12

#Remember to inspect code for bugs.