Alright, let's work through 3990 times 9774 step by step
3990 × 9774 = 9774 × (3990)
+ 9774 × 0 giving us 0
+ 9774 × 90 resulting in 879660
+ 9774 × 900 yielding 8796600
+ 9774 × 3000 which equals 29322000

= 38998260
