Alright, let's work through 7828 times 9883 step by step
7828 × 9883 = 9883 × (7828)
+ 9883 × 8 producing 79064
+ 9883 × 20 that equals 197660
+ 9883 × 800 yielding 7906400
+ 9883 × 7000 that results in 69181000

= 77364124
