Alright, let's work through 1561 times 8699 step by step
1561 × 8699 = 8699 × (1561)
+ 8699 × 1 resulting in 8699
+ 8699 × 60 that is equal 521940
+ 8699 × 500 that is equal 4349500
+ 8699 × 1000 that is equal 8699000

= 13579139
