Alright, let's work through 9864 times 1921 step by step
9864 × 1921 = 1921 × (9864)
+ 1921 × 4 yielding 7684
+ 1921 × 60 giving us 115260
+ 1921 × 800 which equals 1536800
+ 1921 × 9000 yielding 17289000

= 18948744
