Alright, let's work through 99120909 times 38263227 step by step
99120909 × 38263227 = 38263227 × (99120909)
+ 38263227 × 9 resulting in 344369043
+ 38263227 × 00 that equals 0
+ 38263227 × 900 producing 34436904300
+ 38263227 × 0000 giving us 0
+ 38263227 × 20000 yielding 765264540000
+ 38263227 × 100000 giving us 3826322700000
+ 38263227 × 9000000 resulting in 344369043000000
+ 38263227 × 90000000 yielding 3443690430000000

= 3792685841513343
