Alright, let's work through 6690 times 765 step by step
6690 × 765 = 765 × (6690)
+ 765 × 0 giving us 0
+ 765 × 90 that results in 68850
+ 765 × 600 that results in 459000
+ 765 × 6000 that equals 4590000

= 5117850
