We divide 877686 by 13
The aim is to understand the frequency of 13 in 877686.

Going ahead to step 1:
13 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 13

On to step 2:
13 goes into 87 6 times with a remainder of 9.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtract 78 from 87 to get 9.
Take the next digit (7) from the dividend and append it to 9, then repeat: 97 / 13

Advancing to step 3:
13 can be fit into 97 7 times, resulting in a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 67.0
Subtracting 91 from 97 leaves us with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 13

Step 4:
If we divide 66 by 13, we get 5 and a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 675.0
Subtracting 65 from 66 leaves us with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 13

Let's proceed to step 5:
The number 13 fits into 18 1 times, leaving a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 6751.0
If we subtract 13 from 18, we get 5.
Bring next digit (6) of the dividend behind the 5 and repeat the process: 56 / 13

Moving on to step 6:
56 divided by 13 is 4 with a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 67514.0
The remainder is 4 after subtracting 52 from 56.
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 7:
If we divide 40 by 13, we get 3 and a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 67514.3
If we take 39 away from 40, we end up 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.

Moving on to step 8:
13 goes into 10 0 times with a remainder of 10.
The next digit of our result is 0. 
Result so far: 67514.3
Subtracting 0 from 10 leaves us with 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 9:
13 can be fit into 100 7 times, resulting in a remainder of 9.
Write down 7 as next digit of the result. 
Result so far: 67514.307
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.

Advancing to step 10:
90 divided by 13 is 6 with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 67514.3076
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.

Let's proceed to step 11:
13 goes into 120 9 times with a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 67514.30769
If we take 117 away from 120, we end up 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.

Going ahead to step 12:
30 divided by 13 is 2 with a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 67514.307692
Deduct 26 from 30 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 13:
When dividing 40 by 13, we get 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 67514.3076923
Subtracting 39 from 40 leaves us 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.

Step 14:
10 divided by 13 is 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 67514.3076923
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.

After the division, we end up with 67514.3076923 and a remainder of 1e-08.