No problem, we've got 5120 and 3954 to multiply
5120 × 3954 = 3954 × (5120)
+ 3954 × 0 that results in 0
+ 3954 × 20 that results in 79080
+ 3954 × 100 which equals 395400
+ 3954 × 5000 what gives us 19770000

= 20244480
