Alright, let's work through 3981 times 9819 step by step
3981 × 9819 = 9819 × (3981)
+ 9819 × 1 resulting in 9819
+ 9819 × 80 that results in 785520
+ 9819 × 900 what gives us 8837100
+ 9819 × 3000 which equals 29457000

= 39089439
