Alright, let's work through 5491 times 3973 step by step
5491 × 3973 = 3973 × (5491)
+ 3973 × 1 producing 3973
+ 3973 × 90 resulting in 357570
+ 3973 × 400 giving us 1589200
+ 3973 × 5000 giving us 19865000

= 21815743
