Answer :
(23(213738))(145678)
=23(213738)(145678)
=23(213738)(145678)
=(23(170998))(145678)
=1709912(145678)
=12454740616
=20757901016
=23(213738)(145678)
=23(213738)(145678)
=(23(170998))(145678)
=1709912(145678)
=12454740616
=20757901016