Alright, let's work through 5239 times 3455 step by step
5239 × 3455 = 3455 × (5239)
+ 3455 × 9 yielding 31095
+ 3455 × 30 that is equal 103650
+ 3455 × 200 which equals 691000
+ 3455 × 5000 that results in 17275000

= 18100745
