Alright, let's work through 5678 times 3506 step by step
5678 × 3506 = 3506 × (5678)
+ 3506 × 8 resulting in 28048
+ 3506 × 70 giving us 245420
+ 3506 × 600 yielding 2103600
+ 3506 × 5000 which equals 17530000

= 19907068
