Alright, let's work through 90101074 times 80536351 step by step
90101074 × 80536351 = 80536351 × (90101074)
+ 80536351 × 4 which equals 322145404
+ 80536351 × 70 giving us 5637544570
+ 80536351 × 000 which equals 0
+ 80536351 × 1000 resulting in 80536351000
+ 80536351 × 00000 what gives us 0
+ 80536351 × 100000 that equals 8053635100000
+ 80536351 × 0000000 yielding 0
+ 80536351 × 90000000 producing 7248271590000000

= 7256411721140974
