Alright, let's work through 5390 times 1600 step by step
5390 × 1600 = 1600 × (5390)
+ 1600 × 0 yielding 0
+ 1600 × 90 yielding 144000
+ 1600 × 300 which equals 480000
+ 1600 × 5000 that is equal 8000000

= 8624000
