We're going to solve 2003 multiplied by 3865
2003 × 3865 = 3865 × (2003)
+ 3865 × 3 that is equal 11595
+ 3865 × 00 which equals 0
+ 3865 × 000 what gives us 0
+ 3865 × 2000 that is equal 7730000

= 7741595
