13021596 ÷ 835 
The aim is to understand the frequency of 835 in 13021596.

Step 1:
When dividing 1 by 835, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 835

Moving on to step 2:
835 goes into 13 0 times with a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 13 and we're left with 13.
Take the next digit (0) from the dividend and append it to 13, then repeat: 130 / 835

Moving on to step 3:
If we divide 130 by 835, we get 0 and a remainder of 130.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 130, we get 130.
Take the next digit (2) from the dividend and append it to 130, then repeat: 1302 / 835

Advancing to step 4:
835 can be fit into 1302 1 times, resulting in a remainder of 467.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 835 from 1302 and we're left with 467.
Take the next digit (1) from the dividend and append it to 467, then repeat: 4671 / 835

Step 5:
835 can be fit into 4671 5 times, resulting in a remainder of 496.
Write down 5 as next digit of the result. 
Result so far: 15.0
If we subtract 4175 from 4671, we get 496.
Fetch the next digit (5) from the dividend, attach it to 496 and continue: 4965 / 835

Advancing to step 6:
When dividing 4965 by 835, we get 5 with a remainder of 790.
Put 5 as the next digit of the answer. 
Result so far: 155.0
Subtract 4175 from 4965 to get 790.
Take the next digit (9) from the dividend and append it to 790, then repeat: 7909 / 835

On to step 7:
If we divide 7909 by 835, we get 9 and a remainder of 394.
Put 9 as the next digit of the answer. 
Result so far: 1559.0
The remainder is 394 after subtracting 7515 from 7909.
Append the next digit (6) from the dividend to 394 and continue with: 3946 / 835

Let's proceed to step 8:
The number 835 fits into 3946 4 times, leaving a remainder of 606.
Write down 4 as next digit of the result. 
Result so far: 15594.0
If we subtract 3340 from 3946, we get 606.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6060, and continue the process.

Let's proceed to step 9:
835 can be fit into 6060 7 times, resulting in a remainder of 215.
The number 7 becomes the next digit in our result. 
Result so far: 15594.7
Subtracting 5845 from 6060 leaves us with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Step 10:
The number 835 fits into 2150 2 times, leaving a remainder of 480.
The next digit of our result is 2. 
Result so far: 15594.72
If we take 1670 away from 2150, we end up with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

On to step 11:
When dividing 4800 by 835, we get 5 with a remainder of 625.
Write down 5 as next digit of the result. 
Result so far: 15594.725
Subtracting 4175 from 4800 leaves us with 625.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6250, and continue the process.

Advancing to step 12:
6250 divided by 835 is 7 with a remainder of 405.
The number 7 becomes the next digit in our result. 
Result so far: 15594.7257
If we take 5845 away from 6250, we end up with 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Moving on to step 13:
When dividing 4050 by 835, we get 4 with a remainder of 710.
The number 4 becomes the next digit in our result. 
Result so far: 15594.72574
If we subtract 3340 from 4050, we get 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7100, and continue the process.

Let's proceed to step 14:
The number 835 fits into 7100 8 times, leaving a remainder of 420.
The next digit of our result is 8. 
Result so far: 15594.725748
Deduct 6680 from 7100 and we're left with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Let's proceed to step 15:
835 goes into 4200 5 times with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 15594.7257485
Deduct 4175 from 4200 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 16:
835 can be fit into 250 0 times, resulting in a remainder of 250.
The next digit of our result is 0. 
Result so far: 15594.7257485
The remainder is 250 after subtracting 0 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

After the division, we end up with 15594.7257485 and a remainder of 2.5e-07.