Alright, let's work through 89908078 times 63522318 step by step
89908078 × 63522318 = 63522318 × (89908078)
+ 63522318 × 8 that results in 508178544
+ 63522318 × 70 that equals 4446562260
+ 63522318 × 000 that results in 0
+ 63522318 × 8000 producing 508178544000
+ 63522318 × 00000 that equals 0
+ 63522318 × 900000 which equals 57170086200000
+ 63522318 × 9000000 resulting in 571700862000000
+ 63522318 × 80000000 producing 5081785440000000

= 5711169521484804
