Let's calculate 40803421 x 51633442
40803421 × 51633442 = 51633442 × (40803421)
+ 51633442 × 1 producing 51633442
+ 51633442 × 20 resulting in 1032668840
+ 51633442 × 400 producing 20653376800
+ 51633442 × 3000 producing 154900326000
+ 51633442 × 00000 resulting in 0
+ 51633442 × 800000 which equals 41306753600000
+ 51633442 × 0000000 which equals 0
+ 51633442 × 40000000 yielding 2065337680000000

= 2106821071605082
