Alright, let's work through 7773 times 2709 step by step
7773 × 2709 = 2709 × (7773)
+ 2709 × 3 which equals 8127
+ 2709 × 70 that equals 189630
+ 2709 × 700 which equals 1896300
+ 2709 × 7000 producing 18963000

= 21057057
