Let's calculate 8521 x 8900
8521 × 8900 = 8900 × (8521)
+ 8900 × 1 that is equal 8900
+ 8900 × 20 giving us 178000
+ 8900 × 500 that results in 4450000
+ 8900 × 8000 which equals 71200000

= 75836900
