84407 ÷ 9 = 9378 R5
Alright, let's work through the division of 84407 by 9 step by step.

Step 1:
9 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 8 to get 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 9

Step 2:
9 goes into 84 9 times with a remainder of 3.
Write down 9 as next digit of of the result. 
Result so far: 9
Subtract 81 from 84 to get 3.
Bring next digit (4) of the dividend behind the 3 and repeat the process: 34 / 9

Step 3:
9 goes into 34 3 times with a remainder of 7.
Write down 3 as next digit of of the result. 
Result so far: 93
Subtract 27 from 34 to get 7.
Bring next digit (0) of the dividend behind the 7 and repeat the process: 70 / 9

Step 4:
9 goes into 70 7 times with a remainder of 7.
Write down 7 as next digit of of the result. 
Result so far: 937
Subtract 63 from 70 to get 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 9

Step 5:
9 goes into 77 8 times with a remainder of 5.
Write down 8 as next digit of of the result. 
Result so far: 9378
Subtract 72 from 77 to get 5.

The final result is 9378 with a remainder of 5.