Alright, let's work through 8428 times 1911 step by step
8428 × 1911 = 1911 × (8428)
+ 1911 × 8 giving us 15288
+ 1911 × 20 that is equal 38220
+ 1911 × 400 that results in 764400
+ 1911 × 8000 giving us 15288000

= 16105908
