Alright, let's work through 78805780 times 40033365 step by step
78805780 × 40033365 = 40033365 × (78805780)
+ 40033365 × 0 that results in 0
+ 40033365 × 80 yielding 3202669200
+ 40033365 × 700 what gives us 28023355500
+ 40033365 × 5000 giving us 200166825000
+ 40033365 × 00000 giving us 0
+ 40033365 × 800000 what gives us 32026692000000
+ 40033365 × 8000000 that results in 320266920000000
+ 40033365 × 70000000 producing 2802335550000000

= 3154860554849700
