We're dividing 9956370 by 525 
The aim is to understand the frequency of 525 in 9956370.

Let's proceed to step 1:
When dividing 9 by 525, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 525

Going ahead to step 2:
525 can be fit into 99 0 times, resulting in a remainder of 99.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 99 and we're left with 99.
Append the next digit (5) from the dividend to 99 and continue with: 995 / 525

On to step 3:
525 goes into 995 1 times with a remainder of 470.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 525 from 995 and we're left with 470.
Fetch the next digit (6) from the dividend, attach it to 470 and continue: 4706 / 525

Let's proceed to step 4:
525 can be fit into 4706 8 times, resulting in a remainder of 506.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
If we subtract 4200 from 4706, we get 506.
Take the next digit (3) from the dividend and append it to 506, then repeat: 5063 / 525

Let's proceed to step 5:
The number 525 fits into 5063 9 times, leaving a remainder of 338.
Write down 9 as next digit of the result. 
Result so far: 189.0
If we take 4725 away from 5063, we end up with 338.
Take the next digit (7) from the dividend and append it to 338, then repeat: 3387 / 525

Going ahead to step 6:
525 can be fit into 3387 6 times, resulting in a remainder of 237.
The next digit of our result is 6. 
Result so far: 1896.0
Subtracting 3150 from 3387 leaves us with 237.
Fetch the next digit (0) from the dividend, attach it to 237 and continue: 2370 / 525

Step 7:
2370 divided by 525 is 4 with a remainder of 270.
The number 4 becomes the next digit in our result. 
Result so far: 18964.0
If we take 2100 away from 2370, we end up with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Advancing to step 8:
The number 525 fits into 2700 5 times, leaving a remainder of 75.
Record the quotient 5 as the next digit in the result. 
Result so far: 18964.5
The remainder is 75 after subtracting 2625 from 2700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 9:
750 divided by 525 is 1 with a remainder of 225.
Put 1 as the next digit of the answer. 
Result so far: 18964.51
Deduct 525 from 750 and we're left with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Advancing to step 10:
525 can be fit into 2250 4 times, resulting in a remainder of 150.
The number 4 becomes the next digit in our result. 
Result so far: 18964.514
Subtract 2100 from 2250 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 11:
1500 divided by 525 is 2 with a remainder of 450.
Record the quotient 2 as the next digit in the result. 
Result so far: 18964.5142
If we take 1050 away from 1500, we end up with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Going ahead to step 12:
525 can be fit into 4500 8 times, resulting in a remainder of 300.
Write down 8 as next digit of the result. 
Result so far: 18964.51428
Deduct 4200 from 4500 and we're left with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

On to step 13:
When dividing 3000 by 525, we get 5 with a remainder of 375.
Write down 5 as next digit of the result. 
Result so far: 18964.514285
If we subtract 2625 from 3000, we get 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Advancing to step 14:
The number 525 fits into 3750 7 times, leaving a remainder of 75.
Put 7 as the next digit of the answer. 
Result so far: 18964.5142857
Subtracting 3675 from 3750 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 15:
When dividing 750 by 525, we get 1 with a remainder of 225.
Record the quotient 1 as the next digit in the result. 
Result so far: 18964.51428571
If we subtract 525 from 750, we get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

The final result is 18964.51428571 with a remainder of 2.25e-07.