Alright, let's work through 1491 times 2003 step by step
1491 × 2003 = 2003 × (1491)
+ 2003 × 1 giving us 2003
+ 2003 × 90 that results in 180270
+ 2003 × 400 giving us 801200
+ 2003 × 1000 what gives us 2003000

= 2986473
