Alright, let's work through 6603 times 2470 step by step
6603 × 2470 = 2470 × (6603)
+ 2470 × 3 that equals 7410
+ 2470 × 00 that equals 0
+ 2470 × 600 that equals 1482000
+ 2470 × 6000 that is equal 14820000

= 16309410
