Alright, let's work through 5671 times 903 step by step
5671 × 903 = 903 × (5671)
+ 903 × 1 producing 903
+ 903 × 70 giving us 63210
+ 903 × 600 what gives us 541800
+ 903 × 5000 resulting in 4515000

= 5120913
