Alright, let's work through 8380 times 8459 step by step
8380 × 8459 = 8459 × (8380)
+ 8459 × 0 yielding 0
+ 8459 × 80 that is equal 676720
+ 8459 × 300 yielding 2537700
+ 8459 × 8000 that is equal 67672000

= 70886420
