We're going to solve 3603 multiplied by 5877
3603 × 5877 = 5877 × (3603)
+ 5877 × 3 which equals 17631
+ 5877 × 00 that is equal 0
+ 5877 × 600 producing 3526200
+ 5877 × 3000 what gives us 17631000

= 21174831
