Alright, let's work through 83166723 times 1600744 step by step
83166723 × 1600744 = 1600744 × (83166723)
+ 1600744 × 3 that equals 4802232
+ 1600744 × 20 resulting in 32014880
+ 1600744 × 700 that results in 1120520800
+ 1600744 × 6000 producing 9604464000
+ 1600744 × 60000 that is equal 96044640000
+ 1600744 × 100000 that equals 160074400000
+ 1600744 × 3000000 producing 4802232000000
+ 1600744 × 80000000 resulting in 128059520000000

= 133128632841912
