We're going to solve 2780 multiplied by 1328
2780 × 1328 = 1328 × (2780)
+ 1328 × 0 resulting in 0
+ 1328 × 80 what gives us 106240
+ 1328 × 700 that equals 929600
+ 1328 × 2000 giving us 2656000

= 3691840
