Alright, let's work through 6644 times 7707 step by step
6644 × 7707 = 7707 × (6644)
+ 7707 × 4 which equals 30828
+ 7707 × 40 yielding 308280
+ 7707 × 600 which equals 4624200
+ 7707 × 6000 that is equal 46242000

= 51205308
