Alright, let's work through 7804 times 8105 step by step
7804 × 8105 = 8105 × (7804)
+ 8105 × 4 resulting in 32420
+ 8105 × 00 that is equal 0
+ 8105 × 800 producing 6484000
+ 8105 × 7000 that is equal 56735000

= 63251420
