Alright, let's work through 5390 times 5327 step by step
5390 × 5327 = 5327 × (5390)
+ 5327 × 0 that equals 0
+ 5327 × 90 that results in 479430
+ 5327 × 300 giving us 1598100
+ 5327 × 5000 yielding 26635000

= 28712530
