No problem, we've got 1597 and 9897 to multiply
1597 × 9897 = 9897 × (1597)
+ 9897 × 7 that equals 69279
+ 9897 × 90 giving us 890730
+ 9897 × 500 yielding 4948500
+ 9897 × 1000 producing 9897000

= 15805509
