Alright, let's work through 9997 times 1615 step by step
9997 × 1615 = 1615 × (9997)
+ 1615 × 7 which equals 11305
+ 1615 × 90 producing 145350
+ 1615 × 900 that results in 1453500
+ 1615 × 9000 giving us 14535000

= 16145155
