No problem, we've got 4791 and 4523 to multiply
4791 × 4523 = 4523 × (4791)
+ 4523 × 1 giving us 4523
+ 4523 × 90 giving us 407070
+ 4523 × 700 which equals 3166100
+ 4523 × 4000 giving us 18092000

= 21669693
