Alright, let's work through 3115 times 7140 step by step
3115 × 7140 = 7140 × (3115)
+ 7140 × 5 what gives us 35700
+ 7140 × 10 that is equal 71400
+ 7140 × 100 that results in 714000
+ 7140 × 3000 yielding 21420000

= 22241100
