Alright, let's work through 8261 times 6344 step by step
8261 × 6344 = 6344 × (8261)
+ 6344 × 1 what gives us 6344
+ 6344 × 60 yielding 380640
+ 6344 × 200 that equals 1268800
+ 6344 × 8000 giving us 50752000

= 52407784
