Let's divide 52528387 by 809
The aim is to understand the frequency of 809 in 52528387.

Step 1:
809 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (2) from the dividend and append it to 5, then repeat: 52 / 809

Step 2:
809 goes into 52 0 times with a remainder of 52.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 52 and we're left with 52.
Include the next digit (5) from the dividend after 52, then repeat: 525 / 809

Going ahead to step 3:
When dividing 525 by 809, we get 0 with a remainder of 525.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 525 after subtracting 0 from 525.
Grab the next digit (2) from the dividend, add it to 525, then carry on: 5252 / 809

Advancing to step 4:
809 goes into 5252 6 times with a remainder of 398.
Put 6 as the next digit of the answer. 
Result so far: 6.0
If we take 4854 away from 5252, we end up with 398.
Fetch the next digit (8) from the dividend, attach it to 398 and continue: 3988 / 809

Moving on to step 5:
If we divide 3988 by 809, we get 4 and a remainder of 752.
The number 4 becomes the next digit in our result. 
Result so far: 64.0
Subtract 3236 from 3988 to get 752.
Take the next digit (3) from the dividend and append it to 752, then repeat: 7523 / 809

Let's proceed to step 6:
When dividing 7523 by 809, we get 9 with a remainder of 242.
The number 9 becomes the next digit in our result. 
Result so far: 649.0
Deduct 7281 from 7523 and we're left with 242.
Grab the next digit (8) from the dividend, add it to 242, then carry on: 2428 / 809

On to step 7:
809 goes into 2428 3 times with a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 6493.0
Deduct 2427 from 2428 and we're left with 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 809

Going ahead to step 8:
When dividing 17 by 809, we get 0 with a remainder of 17.
The number 0 becomes the next digit in our result. 
Result so far: 64930.0
The remainder is 17 after subtracting 0 from 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 9:
809 can be fit into 170 0 times, resulting in a remainder of 170.
Record the quotient 0 as the next digit in the result. 
Result so far: 64930.0
Deduct 0 from 170 and we're left with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Going ahead to step 10:
1700 divided by 809 is 2 with a remainder of 82.
Put 2 as the next digit of the answer. 
Result so far: 64930.02
The remainder is 82 after subtracting 1618 from 1700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 11:
When dividing 820 by 809, we get 1 with a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 64930.021
Subtract 809 from 820 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 12:
When dividing 110 by 809, we get 0 with a remainder of 110.
Use 0 as the next digit of our solution. 
Result so far: 64930.021
Subtracting 0 from 110 leaves us with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

On to step 13:
The number 809 fits into 1100 1 times, leaving a remainder of 291.
The number 1 becomes the next digit in our result. 
Result so far: 64930.02101
If we take 809 away from 1100, we end up with 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

Advancing to step 14:
809 can be fit into 2910 3 times, resulting in a remainder of 483.
Use 3 as the next digit of our solution. 
Result so far: 64930.021013
If we subtract 2427 from 2910, we get 483.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4830, and continue the process.

Let's proceed to step 15:
When dividing 4830 by 809, we get 5 with a remainder of 785.
Record the quotient 5 as the next digit in the result. 
Result so far: 64930.0210135
If we take 4045 away from 4830, we end up with 785.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7850, and continue the process.

On to step 16:
809 can be fit into 7850 9 times, resulting in a remainder of 569.
Record the quotient 9 as the next digit in the result. 
Result so far: 64930.02101359
Deduct 7281 from 7850 and we're left with 569.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5690, and continue the process.

The final outcome is 64930.02101359, with a leftover of 5.69e-07.