Alright, let's work through 2928 times 4355 step by step
2928 × 4355 = 4355 × (2928)
+ 4355 × 8 which equals 34840
+ 4355 × 20 resulting in 87100
+ 4355 × 900 producing 3919500
+ 4355 × 2000 which equals 8710000

= 12751440
