Let's divide 28502373 by 13
The aim is to understand the frequency of 13 in 28502373.

Going ahead to step 1:
13 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 13

Advancing to step 2:
If we divide 28 by 13, we get 2 and a remainder of 2.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 26 from 28 and we're left with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 13

Let's proceed to step 3:
If we divide 25 by 13, we get 1 and a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
Subtracting 13 from 25 leaves us with 12.
Grab the next digit (0) from the dividend, add it to 12, then carry on: 120 / 13

Going ahead to step 4:
13 goes into 120 9 times with a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 219.0
Deduct 117 from 120 and we're left with 3.
Grab the next digit (2) from the dividend, add it to 3, then carry on: 32 / 13

Going ahead to step 5:
If we divide 32 by 13, we get 2 and a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 2192.0
The remainder is 6 after subtracting 26 from 32.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 13

Advancing to step 6:
13 goes into 63 4 times with a remainder of 11.
Use 4 as the next digit of our solution. 
Result so far: 21924.0
If we subtract 52 from 63, we get 11.
Fetch the next digit (7) from the dividend, attach it to 11 and continue: 117 / 13

Let's proceed to step 7:
13 goes into 117 9 times with a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 219249.0
Deduct 117 from 117 and we're left with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 13

On to step 8:
When dividing 3 by 13, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 2192490.0
Subtracting 0 from 3 leaves us 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.

Let's proceed to step 9:
13 goes into 30 2 times with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 2192490.2
Deduct 26 from 30 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 10:
If we divide 40 by 13, we get 3 and a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 2192490.23
Subtract 39 from 40 to 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.

Moving on to step 11:
If we divide 10 by 13, we get 0 and a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 2192490.23
Deduct 0 from 10 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 12:
13 can be fit into 100 7 times, resulting in a remainder of 9.
The next digit of our result is 7. 
Result so far: 2192490.2307
Subtracting 91 from 100 leaves us 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 13:
13 goes into 90 6 times with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 2192490.23076
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.

Going ahead to step 14:
13 goes into 120 9 times with a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 2192490.230769
Subtracting 117 from 120 leaves us 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.

Moving on to step 15:
The number 13 fits into 30 2 times, leaving a remainder of 4.
The next digit of our result is 2. 
Result so far: 2192490.2307692
Subtracting 26 from 30 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 16:
40 divided by 13 is 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 2192490.23076923
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.

Our division results in 2192490.23076923 with a remaining 1e-09.