Alright, let's work through 4259 times 7100 step by step
4259 × 7100 = 7100 × (4259)
+ 7100 × 9 which equals 63900
+ 7100 × 50 that equals 355000
+ 7100 × 200 resulting in 1420000
+ 7100 × 4000 that equals 28400000

= 30238900
