Alright, let's work through 6816 times 7221 step by step
6816 × 7221 = 7221 × (6816)
+ 7221 × 6 what gives us 43326
+ 7221 × 10 that results in 72210
+ 7221 × 800 that results in 5776800
+ 7221 × 6000 yielding 43326000

= 49218336
