Alright, let's work through 9891 times 5884 step by step
9891 × 5884 = 5884 × (9891)
+ 5884 × 1 that equals 5884
+ 5884 × 90 which equals 529560
+ 5884 × 800 yielding 4707200
+ 5884 × 9000 that is equal 52956000

= 58198644
