We're going to solve 9873 multiplied by 1644
9873 × 1644 = 1644 × (9873)
+ 1644 × 3 which equals 4932
+ 1644 × 70 producing 115080
+ 1644 × 800 that is equal 1315200
+ 1644 × 9000 producing 14796000

= 16231212
