No problem, we've got 83843186 and 66456416 to multiply
83843186 × 66456416 = 66456416 × (83843186)
+ 66456416 × 6 resulting in 398738496
+ 66456416 × 80 giving us 5316513280
+ 66456416 × 100 producing 6645641600
+ 66456416 × 3000 that equals 199369248000
+ 66456416 × 40000 that is equal 2658256640000
+ 66456416 × 800000 that equals 53165132800000
+ 66456416 × 3000000 producing 199369248000000
+ 66456416 × 80000000 giving us 5316513280000000

= 5571917647581376
