Alright, let's work through 6383 times 4025 step by step
6383 × 4025 = 4025 × (6383)
+ 4025 × 3 which equals 12075
+ 4025 × 80 that results in 322000
+ 4025 × 300 that equals 1207500
+ 4025 × 6000 that equals 24150000

= 25691575
