No problem, we've got 5645 and 3529 to multiply
5645 × 3529 = 3529 × (5645)
+ 3529 × 5 that equals 17645
+ 3529 × 40 that equals 141160
+ 3529 × 600 that results in 2117400
+ 3529 × 5000 which equals 17645000

= 19921205
