No problem, we've got 5253 and 4077 to multiply
5253 × 4077 = 4077 × (5253)
+ 4077 × 3 which equals 12231
+ 4077 × 50 resulting in 203850
+ 4077 × 200 what gives us 815400
+ 4077 × 5000 resulting in 20385000

= 21416481
