No problem, we've got 5578 and 3936 to multiply
5578 × 3936 = 3936 × (5578)
+ 3936 × 8 that results in 31488
+ 3936 × 70 which equals 275520
+ 3936 × 500 that results in 1968000
+ 3936 × 5000 that results in 19680000

= 21955008
