No problem, we've got 5083 and 3991 to multiply
5083 × 3991 = 3991 × (5083)
+ 3991 × 3 what gives us 11973
+ 3991 × 80 giving us 319280
+ 3991 × 000 what gives us 0
+ 3991 × 5000 that equals 19955000

= 20286253
