Alright, let's work through 7879 times 477 step by step
7879 × 477 = 477 × (7879)
+ 477 × 9 resulting in 4293
+ 477 × 70 giving us 33390
+ 477 × 800 yielding 381600
+ 477 × 7000 resulting in 3339000

= 3758283
