We're going to solve 5385 multiplied by 3509
5385 × 3509 = 3509 × (5385)
+ 3509 × 5 what gives us 17545
+ 3509 × 80 that equals 280720
+ 3509 × 300 giving us 1052700
+ 3509 × 5000 what gives us 17545000

= 18895965
