Alright, let's work through 5409 times 5209 step by step
5409 × 5209 = 5209 × (5409)
+ 5209 × 9 giving us 46881
+ 5209 × 00 yielding 0
+ 5209 × 400 what gives us 2083600
+ 5209 × 5000 yielding 26045000

= 28175481
