We look at the division of 12661762 by 820 
The aim is to understand the frequency of 820 in 12661762.

Moving on to step 1:
The number 820 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 820

On to step 2:
12 divided by 820 is 0 with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Take the next digit (6) from the dividend and append it to 12, then repeat: 126 / 820

On to step 3:
126 divided by 820 is 0 with a remainder of 126.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 126 to get 126.
Bring next digit (6) of the dividend behind the 126 and repeat the process: 1266 / 820

On to step 4:
The number 820 fits into 1266 1 times, leaving a remainder of 446.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 820 from 1266 leaves us with 446.
Append the next digit (1) from the dividend to 446 and continue with: 4461 / 820

Moving on to step 5:
If we divide 4461 by 820, we get 5 and a remainder of 361.
Write down 5 as next digit of the result. 
Result so far: 15.0
Subtracting 4100 from 4461 leaves us with 361.
Fetch the next digit (7) from the dividend, attach it to 361 and continue: 3617 / 820

Let's proceed to step 6:
If we divide 3617 by 820, we get 4 and a remainder of 337.
Write down 4 as next digit of the result. 
Result so far: 154.0
If we take 3280 away from 3617, we end up with 337.
Include the next digit (6) from the dividend after 337, then repeat: 3376 / 820

Let's proceed to step 7:
820 goes into 3376 4 times with a remainder of 96.
The next digit of our result is 4. 
Result so far: 1544.0
Subtract 3280 from 3376 to get 96.
Take the next digit (2) from the dividend and append it to 96, then repeat: 962 / 820

Let's proceed to step 8:
820 goes into 962 1 times with a remainder of 142.
Record the quotient 1 as the next digit in the result. 
Result so far: 15441.0
Deduct 820 from 962 and we're left with 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

On to step 9:
820 can be fit into 1420 1 times, resulting in a remainder of 600.
Write down 1 as next digit of the result. 
Result so far: 15441.1
The remainder is 600 after subtracting 820 from 1420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Going ahead to step 10:
The number 820 fits into 6000 7 times, leaving a remainder of 260.
The next digit of our result is 7. 
Result so far: 15441.17
Subtracting 5740 from 6000 leaves us with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Moving on to step 11:
If we divide 2600 by 820, we get 3 and a remainder of 140.
The number 3 becomes the next digit in our result. 
Result so far: 15441.173
Subtract 2460 from 2600 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Step 12:
1400 divided by 820 is 1 with a remainder of 580.
Write down 1 as next digit of the result. 
Result so far: 15441.1731
Deduct 820 from 1400 and we're left with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Going ahead to step 13:
820 goes into 5800 7 times with a remainder of 60.
The number 7 becomes the next digit in our result. 
Result so far: 15441.17317
The remainder is 60 after subtracting 5740 from 5800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 14:
The number 820 fits into 600 0 times, leaving a remainder of 600.
The next digit of our result is 0. 
Result so far: 15441.17317
Subtract 0 from 600 to get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Moving on to step 15:
6000 divided by 820 is 7 with a remainder of 260.
Use 7 as the next digit of our solution. 
Result so far: 15441.1731707
Deduct 5740 from 6000 and we're left with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Moving on to step 16:
If we divide 2600 by 820, we get 3 and a remainder of 140.
Record the quotient 3 as the next digit in the result. 
Result so far: 15441.17317073
Subtract 2460 from 2600 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

The final outcome is 15441.17317073, with a leftover of 1.4e-07.