Alright, let's work through 6217 times 8451 step by step
6217 × 8451 = 8451 × (6217)
+ 8451 × 7 that results in 59157
+ 8451 × 10 what gives us 84510
+ 8451 × 200 that equals 1690200
+ 8451 × 6000 yielding 50706000

= 52539867
