Alright, let's work through 2836 times 1603 step by step
2836 × 1603 = 1603 × (2836)
+ 1603 × 6 which equals 9618
+ 1603 × 30 which equals 48090
+ 1603 × 800 that equals 1282400
+ 1603 × 2000 producing 3206000

= 4546108
