Alright, let's work through 3480 times 1405 step by step
3480 × 1405 = 1405 × (3480)
+ 1405 × 0 resulting in 0
+ 1405 × 80 that is equal 112400
+ 1405 × 400 what gives us 562000
+ 1405 × 3000 yielding 4215000

= 4889400
