Alright, let's work through 8991 times 5172 step by step
8991 × 5172 = 5172 × (8991)
+ 5172 × 1 that results in 5172
+ 5172 × 90 what gives us 465480
+ 5172 × 900 what gives us 4654800
+ 5172 × 8000 resulting in 41376000

= 46501452
