We're going to solve 8003 multiplied by 3939
8003 × 3939 = 3939 × (8003)
+ 3939 × 3 that results in 11817
+ 3939 × 00 producing 0
+ 3939 × 000 giving us 0
+ 3939 × 8000 producing 31512000

= 31523817
