Alright, let's work through 4380 times 4339 step by step
4380 × 4339 = 4339 × (4380)
+ 4339 × 0 giving us 0
+ 4339 × 80 producing 347120
+ 4339 × 300 that is equal 1301700
+ 4339 × 4000 that results in 17356000

= 19004820
