Alright, let's work through 6215 times 7128 step by step
6215 × 7128 = 7128 × (6215)
+ 7128 × 5 giving us 35640
+ 7128 × 10 yielding 71280
+ 7128 × 200 giving us 1425600
+ 7128 × 6000 resulting in 42768000

= 44300520
