86603305 divided by 900 
The aim is to understand the frequency of 900 in 86603305.

Step 1:
900 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 900

Advancing to step 2:
If we divide 86 by 900, we get 0 and a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 86, we get 86.
Append the next digit (6) from the dividend to 86 and continue with: 866 / 900

Advancing to step 3:
When dividing 866 by 900, we get 0 with a remainder of 866.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 866, we get 866.
Append the next digit (0) from the dividend to 866 and continue with: 8660 / 900

Advancing to step 4:
8660 divided by 900 is 9 with a remainder of 560.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we take 8100 away from 8660, we end up with 560.
Bring next digit (3) of the dividend behind the 560 and repeat the process: 5603 / 900

Moving on to step 5:
If we divide 5603 by 900, we get 6 and a remainder of 203.
The next digit of our result is 6. 
Result so far: 96.0
If we subtract 5400 from 5603, we get 203.
Include the next digit (3) from the dividend after 203, then repeat: 2033 / 900

Going ahead to step 6:
The number 900 fits into 2033 2 times, leaving a remainder of 233.
The next digit of our result is 2. 
Result so far: 962.0
If we subtract 1800 from 2033, we get 233.
Grab the next digit (0) from the dividend, add it to 233, then carry on: 2330 / 900

Step 7:
900 can be fit into 2330 2 times, resulting in a remainder of 530.
Put 2 as the next digit of the answer. 
Result so far: 9622.0
Deduct 1800 from 2330 and we're left with 530.
Append the next digit (5) from the dividend to 530 and continue with: 5305 / 900

Going ahead to step 8:
900 can be fit into 5305 5 times, resulting in a remainder of 805.
The number 5 becomes the next digit in our result. 
Result so far: 96225.0
Subtract 4500 from 5305 to get 805.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8050, and continue the process.

Going ahead to step 9:
900 goes into 8050 8 times with a remainder of 850.
Record the quotient 8 as the next digit in the result. 
Result so far: 96225.8
Subtracting 7200 from 8050 leaves us with 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8500, and continue the process.

Advancing to step 10:
900 can be fit into 8500 9 times, resulting in a remainder of 400.
Write down 9 as next digit of the result. 
Result so far: 96225.89
Subtract 8100 from 8500 to get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

On to step 11:
900 goes into 4000 4 times with a remainder of 400.
Record the quotient 4 as the next digit in the result. 
Result so far: 96225.894
Subtracting 3600 from 4000 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 12:
4000 divided by 900 is 4 with a remainder of 400.
The number 4 becomes the next digit in our result. 
Result so far: 96225.8944
If we subtract 3600 from 4000, we get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

After the division, we end up with 96225.8944 and a remainder of 0.004.