Alright, let's work through 4440 times 6473 step by step
4440 × 6473 = 6473 × (4440)
+ 6473 × 0 that is equal 0
+ 6473 × 40 that is equal 258920
+ 6473 × 400 that is equal 2589200
+ 6473 × 4000 yielding 25892000

= 28740120
