Alright, let's work through 6424 times 2215 step by step
6424 × 2215 = 2215 × (6424)
+ 2215 × 4 what gives us 8860
+ 2215 × 20 yielding 44300
+ 2215 × 400 that equals 886000
+ 2215 × 6000 yielding 13290000

= 14229160
