Alright, let's work through 5489 times 1728 step by step
5489 × 1728 = 1728 × (5489)
+ 1728 × 9 producing 15552
+ 1728 × 80 giving us 138240
+ 1728 × 400 which equals 691200
+ 1728 × 5000 giving us 8640000

= 9484992
