Alright, let's work through 6123 times 1509 step by step
6123 × 1509 = 1509 × (6123)
+ 1509 × 3 producing 4527
+ 1509 × 20 that results in 30180
+ 1509 × 100 yielding 150900
+ 1509 × 6000 giving us 9054000

= 9239607
