Alright, let's work through 8670 times 7980 step by step
8670 × 7980 = 7980 × (8670)
+ 7980 × 0 resulting in 0
+ 7980 × 70 that is equal 558600
+ 7980 × 600 which equals 4788000
+ 7980 × 8000 yielding 63840000

= 69186600
