Alright, let's work through 2157 times 2450 step by step
2157 × 2450 = 2450 × (2157)
+ 2450 × 7 what gives us 17150
+ 2450 × 50 that results in 122500
+ 2450 × 100 yielding 245000
+ 2450 × 2000 resulting in 4900000

= 5284650
