Alright, let's work through 6381 times 7791 step by step
6381 × 7791 = 7791 × (6381)
+ 7791 × 1 that is equal 7791
+ 7791 × 80 producing 623280
+ 7791 × 300 giving us 2337300
+ 7791 × 6000 which equals 46746000

= 49714371
