Alright, let's work through 4591 times 1728 step by step
4591 × 1728 = 1728 × (4591)
+ 1728 × 1 which equals 1728
+ 1728 × 90 that results in 155520
+ 1728 × 500 that is equal 864000
+ 1728 × 4000 that results in 6912000

= 7933248
