Alright, let's work through 1595 times 9900 step by step
1595 × 9900 = 9900 × (1595)
+ 9900 × 5 giving us 49500
+ 9900 × 90 that equals 891000
+ 9900 × 500 that equals 4950000
+ 9900 × 1000 resulting in 9900000

= 15790500
