No problem, we've got 4386 and 4326 to multiply
4386 × 4326 = 4326 × (4386)
+ 4326 × 6 what gives us 25956
+ 4326 × 80 giving us 346080
+ 4326 × 300 that is equal 1297800
+ 4326 × 4000 that equals 17304000

= 18973836
