772815 ÷ 13 
The aim is to understand the frequency of 13 in 772815.

Let's proceed to step 1:
13 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 13

Step 2:
13 goes into 77 5 times with a remainder of 12.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we subtract 65 from 77, we get 12.
Bring next digit (2) of the dividend behind the 12 and repeat the process: 122 / 13

Moving on to step 3:
13 can be fit into 122 9 times, resulting in a remainder of 5.
Write down 9 as next digit of the result. 
Result so far: 59.0
Subtracting 117 from 122 leaves us with 5.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 13

On to step 4:
If we divide 58 by 13, we get 4 and a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 594.0
Deduct 52 from 58 and we're left with 6.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 13

Step 5:
13 goes into 61 4 times with a remainder of 9.
Use 4 as the next digit of our solution. 
Result so far: 5944.0
The remainder is 9 after subtracting 52 from 61.
Take the next digit (5) from the dividend and append it to 9, then repeat: 95 / 13

Let's proceed to step 6:
The number 13 fits into 95 7 times, leaving a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 59447.0
Subtract 91 from 95 to get 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 7:
The number 13 fits into 40 3 times, leaving a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 59447.3
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.

On to step 8:
13 can be fit into 10 0 times, resulting in a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 59447.3
Subtract 0 from 10 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 9:
13 can be fit into 100 7 times, resulting in a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 59447.307
Deduct 91 from 100 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 10:
13 can be fit into 90 6 times, resulting in a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 59447.3076
If we take 78 away from 90, we end up 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.

Moving on to step 11:
13 can be fit into 120 9 times, resulting in a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 59447.30769
The remainder is 3 after subtracting 117 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 12:
The number 13 fits into 30 2 times, leaving a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 59447.307692
Subtract 26 from 30 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 13:
13 can be fit into 40 3 times, resulting in a remainder of 1.
The next digit of our result is 3. 
Result so far: 59447.3076923
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 14:
The number 13 fits into 10 0 times, leaving a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 59447.3076923
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.

The final result is 59447.3076923 with a remainder of 1e-08.