Alright, let's work through 7899 times 6822 step by step
7899 × 6822 = 6822 × (7899)
+ 6822 × 9 what gives us 61398
+ 6822 × 90 what gives us 613980
+ 6822 × 800 resulting in 5457600
+ 6822 × 7000 that results in 47754000

= 53886978
