Alright, let's work through 4689 times 5478 step by step
4689 × 5478 = 5478 × (4689)
+ 5478 × 9 what gives us 49302
+ 5478 × 80 that is equal 438240
+ 5478 × 600 that is equal 3286800
+ 5478 × 4000 yielding 21912000

= 25686342
