No problem, we've got 3800 and 5158 to multiply
3800 × 5158 = 5158 × (3800)
+ 5158 × 0 giving us 0
+ 5158 × 00 what gives us 0
+ 5158 × 800 that results in 4126400
+ 5158 × 3000 which equals 15474000

= 19600400
