Alright, let's work through 8906 times 9864 step by step
8906 × 9864 = 9864 × (8906)
+ 9864 × 6 yielding 59184
+ 9864 × 00 that equals 0
+ 9864 × 900 that is equal 8877600
+ 9864 × 8000 yielding 78912000

= 87848784
