Alright, let's work through 5386 times 1600 step by step
5386 × 1600 = 1600 × (5386)
+ 1600 × 6 giving us 9600
+ 1600 × 80 producing 128000
+ 1600 × 300 which equals 480000
+ 1600 × 5000 that equals 8000000

= 8617600
