Alright, let's work through 5689 times 2178 step by step
5689 × 2178 = 2178 × (5689)
+ 2178 × 9 which equals 19602
+ 2178 × 80 giving us 174240
+ 2178 × 600 yielding 1306800
+ 2178 × 5000 which equals 10890000

= 12390642
