Alright, let's work through 4257 times 9860 step by step
4257 × 9860 = 9860 × (4257)
+ 9860 × 7 that is equal 69020
+ 9860 × 50 that equals 493000
+ 9860 × 200 giving us 1972000
+ 9860 × 4000 that is equal 39440000

= 41974020
