Alright, let's work through 3891 times 2548 step by step
3891 × 2548 = 2548 × (3891)
+ 2548 × 1 that results in 2548
+ 2548 × 90 what gives us 229320
+ 2548 × 800 yielding 2038400
+ 2548 × 3000 resulting in 7644000

= 9914268
