No problem, we've got 1381 and 3623 to multiply
1381 × 3623 = 3623 × (1381)
+ 3623 × 1 producing 3623
+ 3623 × 80 that equals 289840
+ 3623 × 300 yielding 1086900
+ 3623 × 1000 producing 3623000

= 5003363
