Let's calculate 2159 x 7200
2159 × 7200 = 7200 × (2159)
+ 7200 × 9 which equals 64800
+ 7200 × 50 that results in 360000
+ 7200 × 100 that results in 720000
+ 7200 × 2000 resulting in 14400000

= 15544800
