Alright, let's work through 8413 times 8513 step by step
8413 × 8513 = 8513 × (8413)
+ 8513 × 3 giving us 25539
+ 8513 × 10 producing 85130
+ 8513 × 400 what gives us 3405200
+ 8513 × 8000 giving us 68104000

= 71619869
