Alright, let's work through 4157 times 6199 step by step
4157 × 6199 = 6199 × (4157)
+ 6199 × 7 that equals 43393
+ 6199 × 50 resulting in 309950
+ 6199 × 100 yielding 619900
+ 6199 × 4000 resulting in 24796000

= 25769243
