Alright, let's work through 3781 times 9990 step by step
3781 × 9990 = 9990 × (3781)
+ 9990 × 1 yielding 9990
+ 9990 × 80 producing 799200
+ 9990 × 700 which equals 6993000
+ 9990 × 3000 yielding 29970000

= 37772190
