Alright, let's work through 9963 times 2806 step by step
9963 × 2806 = 2806 × (9963)
+ 2806 × 3 producing 8418
+ 2806 × 60 that equals 168360
+ 2806 × 900 that equals 2525400
+ 2806 × 9000 that equals 25254000

= 27956178
