We're going to solve 8181 multiplied by 4503
8181 × 4503 = 4503 × (8181)
+ 4503 × 1 that equals 4503
+ 4503 × 80 resulting in 360240
+ 4503 × 100 which equals 450300
+ 4503 × 8000 which equals 36024000

= 36839043
