Alright, let's work through 23097599 times 83905999 step by step
23097599 × 83905999 = 83905999 × (23097599)
+ 83905999 × 9 resulting in 755153991
+ 83905999 × 90 that equals 7551539910
+ 83905999 × 500 that equals 41952999500
+ 83905999 × 7000 giving us 587341993000
+ 83905999 × 90000 that is equal 7551539910000
+ 83905999 × 000000 that results in 0
+ 83905999 × 3000000 which equals 251717997000000
+ 83905999 × 20000000 that results in 1678119980000000

= 1938027118596401
