Alright, let's work through 3663 times 2163 step by step
3663 × 2163 = 2163 × (3663)
+ 2163 × 3 producing 6489
+ 2163 × 60 what gives us 129780
+ 2163 × 600 which equals 1297800
+ 2163 × 3000 which equals 6489000

= 7923069
