We're going to solve 2005 multiplied by 5990
2005 × 5990 = 5990 × (2005)
+ 5990 × 5 giving us 29950
+ 5990 × 00 that equals 0
+ 5990 × 000 that equals 0
+ 5990 × 2000 that is equal 11980000

= 12009950
