Alright, let's work through 8713 times 7820 step by step
8713 × 7820 = 7820 × (8713)
+ 7820 × 3 giving us 23460
+ 7820 × 10 which equals 78200
+ 7820 × 700 yielding 5474000
+ 7820 × 8000 what gives us 62560000

= 68135660
