Alright, let's work through 6415 times 6251 step by step
6415 × 6251 = 6251 × (6415)
+ 6251 × 5 that equals 31255
+ 6251 × 10 that results in 62510
+ 6251 × 400 producing 2500400
+ 6251 × 6000 what gives us 37506000

= 40100165
