Alright, let's work through 8777 times 8428 step by step
8777 × 8428 = 8428 × (8777)
+ 8428 × 7 producing 58996
+ 8428 × 70 that results in 589960
+ 8428 × 700 which equals 5899600
+ 8428 × 8000 what gives us 67424000

= 73972556
