Alright, let's work through 6363 times 8780 step by step
6363 × 8780 = 8780 × (6363)
+ 8780 × 3 giving us 26340
+ 8780 × 60 producing 526800
+ 8780 × 300 giving us 2634000
+ 8780 × 6000 that results in 52680000

= 55867140
