Alright, let's work through 6887 times 9787 step by step
6887 × 9787 = 9787 × (6887)
+ 9787 × 7 what gives us 68509
+ 9787 × 80 that results in 782960
+ 9787 × 800 yielding 7829600
+ 9787 × 6000 which equals 58722000

= 67403069
