No problem, we've got 1521 and 4322 to multiply
1521 × 4322 = 4322 × (1521)
+ 4322 × 1 producing 4322
+ 4322 × 20 giving us 86440
+ 4322 × 500 that results in 2161000
+ 4322 × 1000 yielding 4322000

= 6573762
