We're going to solve 2821 multiplied by 1315
2821 × 1315 = 1315 × (2821)
+ 1315 × 1 that is equal 1315
+ 1315 × 20 resulting in 26300
+ 1315 × 800 that results in 1052000
+ 1315 × 2000 that equals 2630000

= 3709615
