Alright, let's work through 40451982 times 8205135 step by step
40451982 × 8205135 = 8205135 × (40451982)
+ 8205135 × 2 giving us 16410270
+ 8205135 × 80 yielding 656410800
+ 8205135 × 900 producing 7384621500
+ 8205135 × 1000 what gives us 8205135000
+ 8205135 × 50000 that is equal 410256750000
+ 8205135 × 400000 producing 3282054000000
+ 8205135 × 0000000 resulting in 0
+ 8205135 × 40000000 that is equal 328205400000000

= 331913973327570
