Alright, let's work through 6665 times 7764 step by step
6665 × 7764 = 7764 × (6665)
+ 7764 × 5 resulting in 38820
+ 7764 × 60 resulting in 465840
+ 7764 × 600 that is equal 4658400
+ 7764 × 6000 that equals 46584000

= 51747060
