Alright, let's work through 6381 times 1151 step by step
6381 × 1151 = 1151 × (6381)
+ 1151 × 1 giving us 1151
+ 1151 × 80 that is equal 92080
+ 1151 × 300 producing 345300
+ 1151 × 6000 giving us 6906000

= 7344531
