Let's calculate 5385 x 4251
5385 × 4251 = 4251 × (5385)
+ 4251 × 5 that results in 21255
+ 4251 × 80 yielding 340080
+ 4251 × 300 that is equal 1275300
+ 4251 × 5000 resulting in 21255000

= 22891635
