We divide 993437 by 13
The aim is to understand the frequency of 13 in 993437.

Moving on to step 1:
13 can be fit into 9 0 times, resulting in a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 13

Step 2:
If we divide 99 by 13, we get 7 and a remainder of 8.
Put 7 as the next digit of the answer. 
Result so far: 7.0
The remainder is 8 after subtracting 91 from 99.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 13

Advancing to step 3:
When dividing 83 by 13, we get 6 with a remainder of 5.
Put 6 as the next digit of the answer. 
Result so far: 76.0
If we subtract 78 from 83, we get 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 13

Going ahead to step 4:
When dividing 54 by 13, we get 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 764.0
Deduct 52 from 54 and we're left with 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 13

Going ahead to step 5:
When dividing 23 by 13, we get 1 with a remainder of 10.
The next digit of our result is 1. 
Result so far: 7641.0
If we subtract 13 from 23, we get 10.
Include the next digit (7) from the dividend after 10, then repeat: 107 / 13

Moving on to step 6:
The number 13 fits into 107 8 times, leaving a remainder of 3.
Record the quotient 8 as the next digit in the result. 
Result so far: 76418.0
The remainder is 3 after subtracting 104 from 107.
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 7:
When dividing 30 by 13, we get 2 with a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 76418.2
If we take 26 away from 30, we end up 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.

Let's proceed to step 8:
If we divide 40 by 13, we get 3 and a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 76418.23
Deduct 39 from 40 and we're left 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.

Step 9:
If we divide 10 by 13, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 76418.23
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.

On to step 10:
If we divide 100 by 13, we get 7 and a remainder of 9.
The next digit of our result is 7. 
Result so far: 76418.2307
Subtract 91 from 100 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 11:
13 goes into 90 6 times with a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 76418.23076
If we take 78 away from 90, we end up 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.

Moving on to step 12:
13 can be fit into 120 9 times, resulting in a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 76418.230769
Subtract 117 from 120 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 13:
13 can be fit into 30 2 times, resulting in a remainder of 4.
The next digit of our result is 2. 
Result so far: 76418.2307692
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.

On to step 14:
13 can be fit into 40 3 times, resulting in a remainder of 1.
The next digit of our result is 3. 
Result so far: 76418.23076923
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.

The final outcome is 76418.23076923, with a leftover of 1e-09.