Alright, let's work through 6150 times 4200 step by step
6150 × 4200 = 4200 × (6150)
+ 4200 × 0 resulting in 0
+ 4200 × 50 that is equal 210000
+ 4200 × 100 what gives us 420000
+ 4200 × 6000 yielding 25200000

= 25830000
