Alright, let's work through 89709829 times 29663108 step by step
89709829 × 29663108 = 29663108 × (89709829)
+ 29663108 × 9 giving us 266967972
+ 29663108 × 20 which equals 593262160
+ 29663108 × 800 producing 23730486400
+ 29663108 × 9000 yielding 266967972000
+ 29663108 × 00000 that equals 0
+ 29663108 × 700000 producing 20764175600000
+ 29663108 × 9000000 that equals 266967972000000
+ 29663108 × 80000000 that equals 2373048640000000

= 2661072346288532
