Alright, let's work through 8731 times 8899 step by step
8731 × 8899 = 8899 × (8731)
+ 8899 × 1 giving us 8899
+ 8899 × 30 that results in 266970
+ 8899 × 700 what gives us 6229300
+ 8899 × 8000 producing 71192000

= 77697169
