We're going to solve 1638 multiplied by 7779
1638 × 7779 = 7779 × (1638)
+ 7779 × 8 producing 62232
+ 7779 × 30 giving us 233370
+ 7779 × 600 that equals 4667400
+ 7779 × 1000 yielding 7779000

= 12742002
