Alright, let's work through 99914378 times 80609489 step by step
99914378 × 80609489 = 80609489 × (99914378)
+ 80609489 × 8 that equals 644875912
+ 80609489 × 70 that is equal 5642664230
+ 80609489 × 300 resulting in 24182846700
+ 80609489 × 4000 that is equal 322437956000
+ 80609489 × 10000 yielding 806094890000
+ 80609489 × 900000 which equals 72548540100000
+ 80609489 × 9000000 that equals 725485401000000
+ 80609489 × 90000000 that equals 7254854010000000

= 8054046954332842
