Alright, let's work through 1623 times 4983 step by step
1623 × 4983 = 4983 × (1623)
+ 4983 × 3 what gives us 14949
+ 4983 × 20 yielding 99660
+ 4983 × 600 that results in 2989800
+ 4983 × 1000 which equals 4983000

= 8087409
