Alright, let's work through 8389 times 4755 step by step
8389 × 4755 = 4755 × (8389)
+ 4755 × 9 yielding 42795
+ 4755 × 80 that is equal 380400
+ 4755 × 300 what gives us 1426500
+ 4755 × 8000 which equals 38040000

= 39889695
