No problem, we've got 4429 and 6436 to multiply
4429 × 6436 = 6436 × (4429)
+ 6436 × 9 what gives us 57924
+ 6436 × 20 which equals 128720
+ 6436 × 400 resulting in 2574400
+ 6436 × 4000 that results in 25744000

= 28505044
