Alright, let's work through 7820 times 4307 step by step
7820 × 4307 = 4307 × (7820)
+ 4307 × 0 that equals 0
+ 4307 × 20 which equals 86140
+ 4307 × 800 yielding 3445600
+ 4307 × 7000 which equals 30149000

= 33680740
