Alright, let's work through 1987 times 8197 step by step
1987 × 8197 = 8197 × (1987)
+ 8197 × 7 that equals 57379
+ 8197 × 80 giving us 655760
+ 8197 × 900 which equals 7377300
+ 8197 × 1000 that results in 8197000

= 16287439
