Alright, let's work through 2485 times 5403 step by step
2485 × 5403 = 5403 × (2485)
+ 5403 × 5 giving us 27015
+ 5403 × 80 giving us 432240
+ 5403 × 400 that is equal 2161200
+ 5403 × 2000 yielding 10806000

= 13426455
