No problem, we've got 1638 and 3523 to multiply
1638 × 3523 = 3523 × (1638)
+ 3523 × 8 giving us 28184
+ 3523 × 30 producing 105690
+ 3523 × 600 that equals 2113800
+ 3523 × 1000 producing 3523000

= 5770674
