Alright, let's work through 1983 times 1646 step by step
1983 × 1646 = 1646 × (1983)
+ 1646 × 3 that results in 4938
+ 1646 × 80 giving us 131680
+ 1646 × 900 that results in 1481400
+ 1646 × 1000 which equals 1646000

= 3264018
