Alright, let's work through 88108209 times 13688199 step by step
88108209 × 13688199 = 13688199 × (88108209)
+ 13688199 × 9 producing 123193791
+ 13688199 × 00 that equals 0
+ 13688199 × 200 giving us 2737639800
+ 13688199 × 8000 that equals 109505592000
+ 13688199 × 00000 which equals 0
+ 13688199 × 100000 yielding 1368819900000
+ 13688199 × 8000000 yielding 109505592000000
+ 13688199 × 80000000 that results in 1095055920000000

= 1206042698325591
