Alright, let's work through 1564 times 7764 step by step
1564 × 7764 = 7764 × (1564)
+ 7764 × 4 that is equal 31056
+ 7764 × 60 giving us 465840
+ 7764 × 500 producing 3882000
+ 7764 × 1000 resulting in 7764000

= 12142896
