No problem, we've got 5485 and 4000 to multiply
5485 × 4000 = 4000 × (5485)
+ 4000 × 5 resulting in 20000
+ 4000 × 80 producing 320000
+ 4000 × 400 resulting in 1600000
+ 4000 × 5000 that is equal 20000000

= 21940000
