Alright, let's work through 1987 times 6038 step by step
1987 × 6038 = 6038 × (1987)
+ 6038 × 7 that is equal 42266
+ 6038 × 80 that results in 483040
+ 6038 × 900 what gives us 5434200
+ 6038 × 1000 resulting in 6038000

= 11997506
