Alright, let's work through 3980 times 6602 step by step
3980 × 6602 = 6602 × (3980)
+ 6602 × 0 giving us 0
+ 6602 × 80 that equals 528160
+ 6602 × 900 which equals 5941800
+ 6602 × 3000 what gives us 19806000

= 26275960
