56478103 ÷ 129 
The aim is to understand the frequency of 129 in 56478103.

Let's proceed to step 1:
129 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Take the next digit (6) from the dividend and append it to 5, then repeat: 56 / 129

On to step 2:
129 can be fit into 56 0 times, resulting in a remainder of 56.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 56, we get 56.
Include the next digit (4) from the dividend after 56, then repeat: 564 / 129

Going ahead to step 3:
129 can be fit into 564 4 times, resulting in a remainder of 48.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 48 after subtracting 516 from 564.
Include the next digit (7) from the dividend after 48, then repeat: 487 / 129

Going ahead to step 4:
If we divide 487 by 129, we get 3 and a remainder of 100.
The next digit of our result is 3. 
Result so far: 43.0
Subtract 387 from 487 to get 100.
Fetch the next digit (8) from the dividend, attach it to 100 and continue: 1008 / 129

Let's proceed to step 5:
1008 divided by 129 is 7 with a remainder of 105.
Record the quotient 7 as the next digit in the result. 
Result so far: 437.0
If we subtract 903 from 1008, we get 105.
Include the next digit (1) from the dividend after 105, then repeat: 1051 / 129

Going ahead to step 6:
129 can be fit into 1051 8 times, resulting in a remainder of 19.
Record the quotient 8 as the next digit in the result. 
Result so far: 4378.0
Subtracting 1032 from 1051 leaves us with 19.
Fetch the next digit (0) from the dividend, attach it to 19 and continue: 190 / 129

Step 7:
When dividing 190 by 129, we get 1 with a remainder of 61.
The number 1 becomes the next digit in our result. 
Result so far: 43781.0
If we subtract 129 from 190, we get 61.
Append the next digit (3) from the dividend to 61 and continue with: 613 / 129

Going ahead to step 8:
129 goes into 613 4 times with a remainder of 97.
The next digit of our result is 4. 
Result so far: 437814.0
Subtract 516 from 613 to get 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

On to step 9:
When dividing 970 by 129, we get 7 with a remainder of 67.
Write down 7 as next digit of the result. 
Result so far: 437814.7
If we take 903 away from 970, we end up with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

On to step 10:
129 can be fit into 670 5 times, resulting in a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 437814.75
The remainder is 25 after subtracting 645 from 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 11:
129 can be fit into 250 1 times, resulting in a remainder of 121.
The next digit of our result is 1. 
Result so far: 437814.751
If we take 129 away from 250, we end up with 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

Let's proceed to step 12:
1210 divided by 129 is 9 with a remainder of 49.
Put 9 as the next digit of the answer. 
Result so far: 437814.7519
The remainder is 49 after subtracting 1161 from 1210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Going ahead to step 13:
The number 129 fits into 490 3 times, leaving a remainder of 103.
Write down 3 as next digit of the result. 
Result so far: 437814.75193
If we take 387 away from 490, we end up with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Advancing to step 14:
The number 129 fits into 1030 7 times, leaving a remainder of 127.
Put 7 as the next digit of the answer. 
Result so far: 437814.751937
Subtract 903 from 1030 to get 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

On to step 15:
If we divide 1270 by 129, we get 9 and a remainder of 109.
The next digit of our result is 9. 
Result so far: 437814.7519379
The remainder is 109 after subtracting 1161 from 1270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Let's proceed to step 16:
1090 divided by 129 is 8 with a remainder of 58.
The next digit of our result is 8. 
Result so far: 437814.75193798
Subtracting 1032 from 1090 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

After the division, we end up with 437814.75193798 and a remainder of 5.8e-08.