Alright, let's work through 7864 times 8199 step by step
7864 × 8199 = 8199 × (7864)
+ 8199 × 4 yielding 32796
+ 8199 × 60 what gives us 491940
+ 8199 × 800 that results in 6559200
+ 8199 × 7000 producing 57393000

= 64476936
