Alright, let's work through 5991 times 503 step by step
5991 × 503 = 503 × (5991)
+ 503 × 1 resulting in 503
+ 503 × 90 giving us 45270
+ 503 × 900 what gives us 452700
+ 503 × 5000 resulting in 2515000

= 3013473
