Alright, let's work through 1561 times 9057 step by step
1561 × 9057 = 9057 × (1561)
+ 9057 × 1 that is equal 9057
+ 9057 × 60 that is equal 543420
+ 9057 × 500 giving us 4528500
+ 9057 × 1000 that equals 9057000

= 14137977
