Alright, let's work through 6637 times 6303 step by step
6637 × 6303 = 6303 × (6637)
+ 6303 × 7 yielding 44121
+ 6303 × 30 what gives us 189090
+ 6303 × 600 which equals 3781800
+ 6303 × 6000 which equals 37818000

= 41833011
