No problem, we've got 4399 and 4364 to multiply
4399 × 4364 = 4364 × (4399)
+ 4364 × 9 what gives us 39276
+ 4364 × 90 which equals 392760
+ 4364 × 300 which equals 1309200
+ 4364 × 4000 that is equal 17456000

= 19197236
