Alright, let's work through 1521 times 8547 step by step
1521 × 8547 = 8547 × (1521)
+ 8547 × 1 which equals 8547
+ 8547 × 20 that is equal 170940
+ 8547 × 500 what gives us 4273500
+ 8547 × 1000 resulting in 8547000

= 12999987
