Alright, let's work through 7641 times 3899 step by step
7641 × 3899 = 3899 × (7641)
+ 3899 × 1 yielding 3899
+ 3899 × 40 which equals 155960
+ 3899 × 600 which equals 2339400
+ 3899 × 7000 giving us 27293000

= 29792259
