Alright, let's work through 3510 times 5403 step by step
3510 × 5403 = 5403 × (3510)
+ 5403 × 0 which equals 0
+ 5403 × 10 which equals 54030
+ 5403 × 500 producing 2701500
+ 5403 × 3000 resulting in 16209000

= 18964530
