We're dividing 253638 by 13 
The aim is to understand the frequency of 13 in 253638.

Moving on to step 1:
When dividing 2 by 13, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 13

Let's proceed to step 2:
13 goes into 25 1 times with a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 13 away from 25, we end up with 12.
Take the next digit (3) from the dividend and append it to 12, then repeat: 123 / 13

Moving on to step 3:
13 can be fit into 123 9 times, resulting in a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 19.0
The remainder is 6 after subtracting 117 from 123.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 13

Moving on to step 4:
13 goes into 66 5 times with a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 195.0
Deduct 65 from 66 and we're left with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 13

Step 5:
13 divided by 13 is 1 with a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 1951.0
The remainder is 0 after subtracting 13 from 13.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 13

Going ahead to step 6:
If we divide 8 by 13, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 19510.0
Subtract 0 from 8 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.

Step 7:
If we divide 80 by 13, we get 6 and a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 19510.6
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 8:
13 can be fit into 20 1 times, resulting in a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 19510.61
Deduct 13 from 20 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 9:
13 goes into 70 5 times with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 19510.615
Subtracting 65 from 70 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.

On to step 10:
13 can be fit into 50 3 times, resulting in a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 19510.6153
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.

Advancing to step 11:
If we divide 110 by 13, we get 8 and a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 19510.61538
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.

Moving on to step 12:
The number 13 fits into 60 4 times, leaving a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 19510.615384
Deduct 52 from 60 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 13:
13 can be fit into 80 6 times, resulting in a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 19510.6153846
The remainder is 2 after subtracting 78 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 14:
If we divide 20 by 13, we get 1 and a remainder of 7.
The next digit of our result is 1. 
Result so far: 19510.61538461
If we subtract 13 from 20, we 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.

The quotient of the division is 19510.61538461, and the remainder is 7e-09.