Alright, let's work through 9871 times 3091 step by step
9871 × 3091 = 3091 × (9871)
+ 3091 × 1 that is equal 3091
+ 3091 × 70 resulting in 216370
+ 3091 × 800 yielding 2472800
+ 3091 × 9000 that is equal 27819000

= 30511261
