Alright, let's work through 7689 times 2739 step by step
7689 × 2739 = 2739 × (7689)
+ 2739 × 9 which equals 24651
+ 2739 × 80 resulting in 219120
+ 2739 × 600 that equals 1643400
+ 2739 × 7000 giving us 19173000

= 21060171
