We're going to solve 8229 multiplied by 1644
8229 × 1644 = 1644 × (8229)
+ 1644 × 9 producing 14796
+ 1644 × 20 yielding 32880
+ 1644 × 200 giving us 328800
+ 1644 × 8000 resulting in 13152000

= 13528476
