Alright, let's work through 6616 times 4001 step by step
6616 × 4001 = 4001 × (6616)
+ 4001 × 6 giving us 24006
+ 4001 × 10 giving us 40010
+ 4001 × 600 what gives us 2400600
+ 4001 × 6000 which equals 24006000

= 26470616
