Alright, let's work through 1660 times 3039 step by step
1660 × 3039 = 3039 × (1660)
+ 3039 × 0 what gives us 0
+ 3039 × 60 producing 182340
+ 3039 × 600 that results in 1823400
+ 3039 × 1000 which equals 3039000

= 5044740
