Let's calculate 7641 x 4138
7641 × 4138 = 4138 × (7641)
+ 4138 × 1 resulting in 4138
+ 4138 × 40 that results in 165520
+ 4138 × 600 that is equal 2482800
+ 4138 × 7000 which equals 28966000

= 31618458
