Alright, let's work through 8959 times 1556 step by step
8959 × 1556 = 1556 × (8959)
+ 1556 × 9 that equals 14004
+ 1556 × 50 that is equal 77800
+ 1556 × 900 what gives us 1400400
+ 1556 × 8000 producing 12448000

= 13940204
