Let's calculate 7704 x 8021
7704 × 8021 = 8021 × (7704)
+ 8021 × 4 that results in 32084
+ 8021 × 00 resulting in 0
+ 8021 × 700 that results in 5614700
+ 8021 × 7000 which equals 56147000

= 61793784
