Let's calculate 7387 x 2447
7387 × 2447 = 2447 × (7387)
+ 2447 × 7 giving us 17129
+ 2447 × 80 that is equal 195760
+ 2447 × 300 resulting in 734100
+ 2447 × 7000 that results in 17129000

= 18075989
