Alright, let's work through 6678 times 6535 step by step
6678 × 6535 = 6535 × (6678)
+ 6535 × 8 which equals 52280
+ 6535 × 70 which equals 457450
+ 6535 × 600 resulting in 3921000
+ 6535 × 6000 that is equal 39210000

= 43640730
