Alright, let's work through 18549945 times 90815638 step by step
18549945 × 90815638 = 90815638 × (18549945)
+ 90815638 × 5 which equals 454078190
+ 90815638 × 40 giving us 3632625520
+ 90815638 × 900 which equals 81734074200
+ 90815638 × 9000 that equals 817340742000
+ 90815638 × 40000 which equals 3632625520000
+ 90815638 × 500000 that equals 45407819000000
+ 90815638 × 8000000 which equals 726525104000000
+ 90815638 × 10000000 that equals 908156380000000

= 1684625090039910
