We're dividing 185749 by 13 
The aim is to understand the frequency of 13 in 185749.

Step 1:
When dividing 1 by 13, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 13

On to step 2:
If we divide 18 by 13, we get 1 and a remainder of 5.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 13 from 18 to get 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 13

Moving on to step 3:
13 goes into 55 4 times with a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtracting 52 from 55 leaves us with 3.
Bring next digit (7) of the dividend behind the 3 and repeat the process: 37 / 13

On to step 4:
If we divide 37 by 13, we get 2 and a remainder of 11.
Use 2 as the next digit of our solution. 
Result so far: 142.0
If we take 26 away from 37, we end up with 11.
Include the next digit (4) from the dividend after 11, then repeat: 114 / 13

On to step 5:
114 divided by 13 is 8 with a remainder of 10.
Write down 8 as next digit of the result. 
Result so far: 1428.0
Subtracting 104 from 114 leaves us with 10.
Grab the next digit (9) from the dividend, add it to 10, then carry on: 109 / 13

Going ahead to step 6:
13 can be fit into 109 8 times, resulting in a remainder of 5.
Put 8 as the next digit of the answer. 
Result so far: 14288.0
Subtracting 104 from 109 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 7:
If we divide 50 by 13, we get 3 and a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 14288.3
If we take 39 away from 50, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 8:
13 can be fit into 110 8 times, resulting in a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 14288.38
If we take 104 away from 110, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 9:
If we divide 60 by 13, we get 4 and a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 14288.384
Subtract 52 from 60 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 10:
If we divide 80 by 13, we get 6 and a remainder of 2.
The next digit of our result is 6. 
Result so far: 14288.3846
If we subtract 78 from 80, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 11:
20 divided by 13 is 1 with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 14288.38461
Subtract 13 from 20 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 12:
If we divide 70 by 13, we get 5 and a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 14288.384615
Deduct 65 from 70 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 13:
The number 13 fits into 50 3 times, leaving a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 14288.3846153
Subtracting 39 from 50 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 14:
When dividing 110 by 13, we get 8 with a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 14288.38461538
Subtracting 104 from 110 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final result is 14288.38461538 with a remainder of 6e-09.