Alright, let's work through 7707 times 1653 step by step
7707 × 1653 = 1653 × (7707)
+ 1653 × 7 what gives us 11571
+ 1653 × 00 that results in 0
+ 1653 × 700 that equals 1157100
+ 1653 × 7000 yielding 11571000

= 12739671
