Alright, let's work through 40406767 times 8739040 step by step
40406767 × 8739040 = 8739040 × (40406767)
+ 8739040 × 7 giving us 61173280
+ 8739040 × 60 that is equal 524342400
+ 8739040 × 700 resulting in 6117328000
+ 8739040 × 6000 that results in 52434240000
+ 8739040 × 00000 that results in 0
+ 8739040 × 400000 producing 3495616000000
+ 8739040 × 0000000 yielding 0
+ 8739040 × 40000000 that results in 349561600000000

= 353116353083680
