def separate_comma(int):
	pass

print(separate_comma(100) == '100')
print(separate_comma(1000) == '1,000')
print(separate_comma(1234567890) == '1,234,567,890')
print(separate_comma(1234567890098765432123456789098765432134567890) == "1,234,567,890,098,765,432,123,456,789,098,765,432,134,567,890")