Alright, let's work through 7907 times 9819 step by step
7907 × 9819 = 9819 × (7907)
+ 9819 × 7 producing 68733
+ 9819 × 00 resulting in 0
+ 9819 × 900 what gives us 8837100
+ 9819 × 7000 that is equal 68733000

= 77638833
