Alright, let's work through 4122 times 7128 step by step
4122 × 7128 = 7128 × (4122)
+ 7128 × 2 that results in 14256
+ 7128 × 20 giving us 142560
+ 7128 × 100 what gives us 712800
+ 7128 × 4000 yielding 28512000

= 29381616
