90452971 divided by 825 
The aim is to understand the frequency of 825 in 90452971.

Advancing to step 1:
When dividing 9 by 825, we get 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 825

Let's proceed to step 2:
If we divide 90 by 825, we get 0 and a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 90, we end up with 90.
Bring next digit (4) of the dividend behind the 90 and repeat the process: 904 / 825

Going ahead to step 3:
The number 825 fits into 904 1 times, leaving a remainder of 79.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 825 from 904 leaves us with 79.
Fetch the next digit (5) from the dividend, attach it to 79 and continue: 795 / 825

Step 4:
The number 825 fits into 795 0 times, leaving a remainder of 795.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we subtract 0 from 795, we get 795.
Grab the next digit (2) from the dividend, add it to 795, then carry on: 7952 / 825

Going ahead to step 5:
825 goes into 7952 9 times with a remainder of 527.
Write down 9 as next digit of the result. 
Result so far: 109.0
Subtracting 7425 from 7952 leaves us with 527.
Append the next digit (9) from the dividend to 527 and continue with: 5279 / 825

Going ahead to step 6:
The number 825 fits into 5279 6 times, leaving a remainder of 329.
Record the quotient 6 as the next digit in the result. 
Result so far: 1096.0
The remainder is 329 after subtracting 4950 from 5279.
Take the next digit (7) from the dividend and append it to 329, then repeat: 3297 / 825

Let's proceed to step 7:
The number 825 fits into 3297 3 times, leaving a remainder of 822.
Use 3 as the next digit of our solution. 
Result so far: 10963.0
Deduct 2475 from 3297 and we're left with 822.
Take the next digit (1) from the dividend and append it to 822, then repeat: 8221 / 825

Let's proceed to step 8:
8221 divided by 825 is 9 with a remainder of 796.
Put 9 as the next digit of the answer. 
Result so far: 109639.0
If we subtract 7425 from 8221, we get 796.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7960, and continue the process.

Step 9:
When dividing 7960 by 825, we get 9 with a remainder of 535.
Write down 9 as next digit of the result. 
Result so far: 109639.9
If we take 7425 away from 7960, we end up with 535.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5350, and continue the process.

Moving on to step 10:
825 can be fit into 5350 6 times, resulting in a remainder of 400.
Put 6 as the next digit of the answer. 
Result so far: 109639.96
The remainder is 400 after subtracting 4950 from 5350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Let's proceed to step 11:
If we divide 4000 by 825, we get 4 and a remainder of 700.
Use 4 as the next digit of our solution. 
Result so far: 109639.964
If we take 3300 away from 4000, we end up with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Let's proceed to step 12:
825 can be fit into 7000 8 times, resulting in a remainder of 400.
The number 8 becomes the next digit in our result. 
Result so far: 109639.9648
Deduct 6600 from 7000 and we're left 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.

Going ahead to step 13:
If we divide 4000 by 825, we get 4 and a remainder of 700.
Record the quotient 4 as the next digit in the result. 
Result so far: 109639.96484
If we take 3300 away from 4000, we end up with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

On to step 14:
825 can be fit into 7000 8 times, resulting in a remainder of 400.
Write down 8 as next digit of the result. 
Result so far: 109639.964848
If we take 6600 away from 7000, we end up 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.

Going ahead to step 15:
4000 divided by 825 is 4 with a remainder of 700.
Put 4 as the next digit of the answer. 
Result so far: 109639.9648484
Deduct 3300 from 4000 and we're left with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Advancing to step 16:
7000 divided by 825 is 8 with a remainder of 400.
The next digit of our result is 8. 
Result so far: 109639.96484848
Deduct 6600 from 7000 and we're left 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.

The quotient of the division is 109639.96484848, and the remainder is 4e-07.