No problem, we've got 4942 and 4081 to multiply
4942 × 4081 = 4081 × (4942)
+ 4081 × 2 giving us 8162
+ 4081 × 40 what gives us 163240
+ 4081 × 900 that is equal 3672900
+ 4081 × 4000 which equals 16324000

= 20168302
