Alright, let's work through 4399 times 4230 step by step
4399 × 4230 = 4230 × (4399)
+ 4230 × 9 giving us 38070
+ 4230 × 90 that is equal 380700
+ 4230 × 300 what gives us 1269000
+ 4230 × 4000 giving us 16920000

= 18607770
