Alright, let's work through 1561 times 8339 step by step
1561 × 8339 = 8339 × (1561)
+ 8339 × 1 which equals 8339
+ 8339 × 60 what gives us 500340
+ 8339 × 500 producing 4169500
+ 8339 × 1000 resulting in 8339000

= 13017179
