We divide 749239 by 13
The aim is to understand the frequency of 13 in 749239.

On to step 1:
If we divide 7 by 13, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 13

Advancing to step 2:
13 goes into 74 5 times with a remainder of 9.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we take 65 away from 74, we end up with 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 13

Step 3:
If we divide 99 by 13, we get 7 and a remainder of 8.
The next digit of our result is 7. 
Result so far: 57.0
Deduct 91 from 99 and we're left with 8.
Grab the next digit (2) from the dividend, add it to 8, then carry on: 82 / 13

On to step 4:
82 divided by 13 is 6 with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 576.0
If we subtract 78 from 82, we get 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 13

Step 5:
13 can be fit into 43 3 times, resulting in a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 5763.0
The remainder is 4 after subtracting 39 from 43.
Take the next digit (9) from the dividend and append it to 4, then repeat: 49 / 13

Moving on to step 6:
If we divide 49 by 13, we get 3 and a remainder of 10.
Use 3 as the next digit of our solution. 
Result so far: 57633.0
Deduct 39 from 49 and we're left 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.

On to step 7:
100 divided by 13 is 7 with a remainder of 9.
Put 7 as the next digit of the answer. 
Result so far: 57633.7
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.

Moving on to step 8:
If we divide 90 by 13, we get 6 and a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 57633.76
Deduct 78 from 90 and we're left 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.

Advancing to step 9:
The number 13 fits into 120 9 times, leaving a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 57633.769
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.

Step 10:
If we divide 30 by 13, we get 2 and a remainder of 4.
The next digit of our result is 2. 
Result so far: 57633.7692
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.

Going ahead 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: 57633.76923
If we subtract 39 from 40, we get 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 12:
13 can be fit into 10 0 times, resulting in a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 57633.76923
If we take 0 away from 10, we end up 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.

Moving on to step 13:
13 goes into 100 7 times with a remainder of 9.
The next digit of our result is 7. 
Result so far: 57633.7692307
The remainder is 9 after subtracting 91 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 14:
The number 13 fits into 90 6 times, leaving a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 57633.76923076
If we subtract 78 from 90, we 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.

After the division, we end up with 57633.76923076 and a remainder of 1.2e-08.