We're going to solve 1997 multiplied by 7778
1997 × 7778 = 7778 × (1997)
+ 7778 × 7 that results in 54446
+ 7778 × 90 which equals 700020
+ 7778 × 900 which equals 7000200
+ 7778 × 1000 that equals 7778000

= 15532666
