We're going to solve 1620 multiplied by 7781
1620 × 7781 = 7781 × (1620)
+ 7781 × 0 producing 0
+ 7781 × 20 giving us 155620
+ 7781 × 600 producing 4668600
+ 7781 × 1000 giving us 7781000

= 12605220
