Alright, let's work through 7860 times 3861 step by step
7860 × 3861 = 3861 × (7860)
+ 3861 × 0 that is equal 0
+ 3861 × 60 what gives us 231660
+ 3861 × 800 that equals 3088800
+ 3861 × 7000 which equals 27027000

= 30347460
