We divide 975881 by 13
The aim is to understand the frequency of 13 in 975881.

Advancing to step 1:
13 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (7) from the dividend, add it to 9, then carry on: 97 / 13

Let's proceed to step 2:
13 can be fit into 97 7 times, resulting in a remainder of 6.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Deduct 91 from 97 and we're left with 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 13

Going ahead to step 3:
13 can be fit into 65 5 times, resulting in a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 75.0
Subtracting 65 from 65 leaves us with 0.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 13

Step 4:
13 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 750.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (8) from the dividend, add it to 8, then carry on: 88 / 13

On to step 5:
The number 13 fits into 88 6 times, leaving a remainder of 10.
Write down 6 as next digit of the result. 
Result so far: 7506.0
Deduct 78 from 88 and we're left with 10.
Fetch the next digit (1) from the dividend, attach it to 10 and continue: 101 / 13

Step 6:
101 divided by 13 is 7 with a remainder of 10.
Write down 7 as next digit of the result. 
Result so far: 75067.0
Subtract 91 from 101 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 7:
13 goes into 100 7 times with a remainder of 9.
The next digit of our result is 7. 
Result so far: 75067.7
Subtract 91 from 100 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 8:
The number 13 fits into 90 6 times, leaving a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 75067.76
Subtracting 78 from 90 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 9:
If we divide 120 by 13, we get 9 and a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 75067.769
Deduct 117 from 120 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 10:
30 divided by 13 is 2 with a remainder of 4.
The next digit of our result is 2. 
Result so far: 75067.7692
The remainder is 4 after subtracting 26 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 11:
40 divided by 13 is 3 with a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 75067.76923
Deduct 39 from 40 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 12:
If we divide 10 by 13, we get 0 and a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 75067.76923
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 13:
The number 13 fits into 100 7 times, leaving a remainder of 9.
The next digit of our result is 7. 
Result so far: 75067.7692307
If we subtract 91 from 100, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 14:
13 goes into 90 6 times with a remainder of 12.
The next digit of our result is 6. 
Result so far: 75067.76923076
Subtract 78 from 90 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 75067.76923076, with a leftover of 1.2e-08.