Alright, let's work through 6621 times 2708 step by step
6621 × 2708 = 2708 × (6621)
+ 2708 × 1 that equals 2708
+ 2708 × 20 that equals 54160
+ 2708 × 600 giving us 1624800
+ 2708 × 6000 which equals 16248000

= 17929668
