Alright, let's work through 66958720 times 80893794 step by step
66958720 × 80893794 = 80893794 × (66958720)
+ 80893794 × 0 giving us 0
+ 80893794 × 20 producing 1617875880
+ 80893794 × 700 resulting in 56625655800
+ 80893794 × 8000 producing 647150352000
+ 80893794 × 50000 yielding 4044689700000
+ 80893794 × 900000 producing 72804414600000
+ 80893794 × 6000000 producing 485362764000000
+ 80893794 × 60000000 that equals 4853627640000000

= 5416544902183680
