We're going to solve 1998 multiplied by 1644
1998 × 1644 = 1644 × (1998)
+ 1644 × 8 resulting in 13152
+ 1644 × 90 that is equal 147960
+ 1644 × 900 producing 1479600
+ 1644 × 1000 what gives us 1644000

= 3284712
