Alright, let's work through 3944 times 6430 step by step
3944 × 6430 = 6430 × (3944)
+ 6430 × 4 resulting in 25720
+ 6430 × 40 that results in 257200
+ 6430 × 900 yielding 5787000
+ 6430 × 3000 that equals 19290000

= 25359920
