Alright, let's work through 7786 times 6821 step by step
7786 × 6821 = 6821 × (7786)
+ 6821 × 6 that results in 40926
+ 6821 × 80 which equals 545680
+ 6821 × 700 what gives us 4774700
+ 6821 × 7000 what gives us 47747000

= 53108306
