Alright, let's work through 9835 times 3987 step by step
9835 × 3987 = 3987 × (9835)
+ 3987 × 5 which equals 19935
+ 3987 × 30 that equals 119610
+ 3987 × 800 which equals 3189600
+ 3987 × 9000 producing 35883000

= 39212145
