Alright, let's work through 7864 times 1625 step by step
7864 × 1625 = 1625 × (7864)
+ 1625 × 4 what gives us 6500
+ 1625 × 60 producing 97500
+ 1625 × 800 that is equal 1300000
+ 1625 × 7000 producing 11375000

= 12779000
