We're going to solve 1640 multiplied by 2636
1640 × 2636 = 2636 × (1640)
+ 2636 × 0 what gives us 0
+ 2636 × 40 resulting in 105440
+ 2636 × 600 resulting in 1581600
+ 2636 × 1000 that results in 2636000

= 4323040
