Alright, let's work through 4900 times 5257 step by step
4900 × 5257 = 5257 × (4900)
+ 5257 × 0 giving us 0
+ 5257 × 00 giving us 0
+ 5257 × 900 that results in 4731300
+ 5257 × 4000 that results in 21028000

= 25759300
