Alright, let's work through 6324 times 2903 step by step
6324 × 2903 = 2903 × (6324)
+ 2903 × 4 which equals 11612
+ 2903 × 20 that is equal 58060
+ 2903 × 300 producing 870900
+ 2903 × 6000 which equals 17418000

= 18358572
