Alright, let's work through 6590 times 677 step by step
6590 × 677 = 677 × (6590)
+ 677 × 0 yielding 0
+ 677 × 90 that results in 60930
+ 677 × 500 that results in 338500
+ 677 × 6000 resulting in 4062000

= 4461430
