No problem, we've got 4982 and 4005 to multiply
4982 × 4005 = 4005 × (4982)
+ 4005 × 2 that is equal 8010
+ 4005 × 80 giving us 320400
+ 4005 × 900 what gives us 3604500
+ 4005 × 4000 that equals 16020000

= 19952910
