616581 divided by 9 
The aim is to understand the frequency of 9 in 616581.

Let's proceed to step 1:
9 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 9

Moving on to step 2:
61 divided by 9 is 6 with a remainder of 7.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 7 after subtracting 54 from 61.
Append the next digit (6) from the dividend to 7 and continue with: 76 / 9

On to step 3:
76 divided by 9 is 8 with a remainder of 4.
Use 8 as the next digit of our solution. 
Result so far: 68.0
If we subtract 72 from 76, we get 4.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 9

On to step 4:
When dividing 45 by 9, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 685.0
Subtract 45 from 45 to get 0.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 9

Advancing to step 5:
If we divide 8 by 9, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 6850.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 9

Moving on to step 6:
9 can be fit into 81 9 times, resulting in a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 68509.0
Deduct 81 from 81 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 7:
9 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 68509.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
The number 9 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 68509.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 68509.0 with a remaining 0.0.