Alright, let's work through 6415 times 712 step by step
6415 × 712 = 712 × (6415)
+ 712 × 5 producing 3560
+ 712 × 10 giving us 7120
+ 712 × 400 that equals 284800
+ 712 × 6000 that is equal 4272000

= 4567480
