Alright, let's work through 9867 times 7821 step by step
9867 × 7821 = 7821 × (9867)
+ 7821 × 7 that equals 54747
+ 7821 × 60 which equals 469260
+ 7821 × 800 that is equal 6256800
+ 7821 × 9000 resulting in 70389000

= 77169807
