25600121 ÷ 852 
The aim is to understand the frequency of 852 in 25600121.

Let's proceed to step 1:
852 goes into 2 0 times with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 852

Moving on to step 2:
852 can be fit into 25 0 times, resulting in a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Take the next digit (6) from the dividend and append it to 25, then repeat: 256 / 852

Step 3:
852 can be fit into 256 0 times, resulting in a remainder of 256.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 256 leaves us with 256.
Append the next digit (0) from the dividend to 256 and continue with: 2560 / 852

Let's proceed to step 4:
852 can be fit into 2560 3 times, resulting in a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 4 after subtracting 2556 from 2560.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 852

Step 5:
The number 852 fits into 40 0 times, leaving a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 30.0
Deduct 0 from 40 and we're left with 40.
Include the next digit (1) from the dividend after 40, then repeat: 401 / 852

Moving on to step 6:
852 can be fit into 401 0 times, resulting in a remainder of 401.
The next digit of our result is 0. 
Result so far: 300.0
The remainder is 401 after subtracting 0 from 401.
Fetch the next digit (2) from the dividend, attach it to 401 and continue: 4012 / 852

Step 7:
If we divide 4012 by 852, we get 4 and a remainder of 604.
Put 4 as the next digit of the answer. 
Result so far: 3004.0
Subtracting 3408 from 4012 leaves us with 604.
Fetch the next digit (1) from the dividend, attach it to 604 and continue: 6041 / 852

Moving on to step 8:
852 goes into 6041 7 times with a remainder of 77.
Put 7 as the next digit of the answer. 
Result so far: 30047.0
If we take 5964 away from 6041, we end up with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Going ahead to step 9:
When dividing 770 by 852, we get 0 with a remainder of 770.
The next digit of our result is 0. 
Result so far: 30047.0
Subtracting 0 from 770 leaves us with 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7700, and continue the process.

Step 10:
The number 852 fits into 7700 9 times, leaving a remainder of 32.
Put 9 as the next digit of the answer. 
Result so far: 30047.09
If we subtract 7668 from 7700, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 11:
When dividing 320 by 852, we get 0 with a remainder of 320.
The number 0 becomes the next digit in our result. 
Result so far: 30047.09
If we subtract 0 from 320, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 12:
The number 852 fits into 3200 3 times, leaving a remainder of 644.
The next digit of our result is 3. 
Result so far: 30047.0903
If we subtract 2556 from 3200, we get 644.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6440, and continue the process.

Going ahead to step 13:
852 can be fit into 6440 7 times, resulting in a remainder of 476.
The next digit of our result is 7. 
Result so far: 30047.09037
Subtract 5964 from 6440 to get 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

Step 14:
If we divide 4760 by 852, we get 5 and a remainder of 500.
Record the quotient 5 as the next digit in the result. 
Result so far: 30047.090375
Subtract 4260 from 4760 to get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Step 15:
5000 divided by 852 is 5 with a remainder of 740.
Record the quotient 5 as the next digit in the result. 
Result so far: 30047.0903755
The remainder is 740 after subtracting 4260 from 5000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

The quotient of the division is 30047.0903755, and the remainder is 7.4e-06.