We're going to solve 5390 multiplied by 3945
5390 × 3945 = 3945 × (5390)
+ 3945 × 0 which equals 0
+ 3945 × 90 giving us 355050
+ 3945 × 300 giving us 1183500
+ 3945 × 5000 that is equal 19725000

= 21263550
