We're going to solve 5399 multiplied by 3972
5399 × 3972 = 3972 × (5399)
+ 3972 × 9 what gives us 35748
+ 3972 × 90 what gives us 357480
+ 3972 × 300 which equals 1191600
+ 3972 × 5000 resulting in 19860000

= 21444828
