Alright, let's work through 7820 times 6854 step by step
7820 × 6854 = 6854 × (7820)
+ 6854 × 0 giving us 0
+ 6854 × 20 giving us 137080
+ 6854 × 800 yielding 5483200
+ 6854 × 7000 producing 47978000

= 53598280
