9 . 11 . 53 + 33 . 46 . 3 + 99
= 9 . 11 . 53 + 33 . 3 . 46 + 99
= 99 . 53 + 99 . 46 + 99
= 99 . ( 53 + 46 ) + 99
= 99 . 99 + 99
= 9801 + 99
= 9900
9 . 11 . 53 + 33 . 46 . 3 + 99
= 99 . 53 + 99 . 46 + 99
= 99 . (53 + 46) + 99
= 99 . 99 + 99
= 9801 + 99
= 9900.