Let's calculate 2387 x 4157
2387 × 4157 = 4157 × (2387)
+ 4157 × 7 which equals 29099
+ 4157 × 80 that is equal 332560
+ 4157 × 300 that results in 1247100
+ 4157 × 2000 that is equal 8314000

= 9922759
