Alright, let's work through 6680 times 6363 step by step
6680 × 6363 = 6363 × (6680)
+ 6363 × 0 resulting in 0
+ 6363 × 80 which equals 509040
+ 6363 × 600 that results in 3817800
+ 6363 × 6000 yielding 38178000

= 42504840
