Let's divide 959590 by 13
The aim is to understand the frequency of 13 in 959590.

Going ahead to step 1:
13 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Take the next digit (5) from the dividend and append it to 9, then repeat: 95 / 13

Moving on to step 2:
13 goes into 95 7 times with a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtract 91 from 95 to get 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 13

Advancing to step 3:
13 goes into 49 3 times with a remainder of 10.
Use 3 as the next digit of our solution. 
Result so far: 73.0
Subtracting 39 from 49 leaves us with 10.
Append the next digit (5) from the dividend to 10 and continue with: 105 / 13

Going ahead to step 4:
If we divide 105 by 13, we get 8 and a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 738.0
Subtract 104 from 105 to get 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 13

Step 5:
The number 13 fits into 19 1 times, leaving a remainder of 6.
The next digit of our result is 1. 
Result so far: 7381.0
Subtract 13 from 19 to get 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 13

Moving on to step 6:
60 divided by 13 is 4 with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 73814.0
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.

Let's proceed to step 7:
The number 13 fits into 80 6 times, leaving a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 73814.6
Subtract 78 from 80 to 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.

Advancing to step 8:
The number 13 fits into 20 1 times, leaving a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 73814.61
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.

On to step 9:
When dividing 70 by 13, we get 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 73814.615
The remainder is 5 after subtracting 65 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 10:
13 can be fit into 50 3 times, resulting in a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 73814.6153
Subtract 39 from 50 to get 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 11:
When dividing 110 by 13, we get 8 with a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 73814.61538
Deduct 104 from 110 and we're left 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.

Step 12:
When dividing 60 by 13, we get 4 with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 73814.615384
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.

Moving on to 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: 73814.6153846
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.

On to step 14:
When dividing 20 by 13, we get 1 with a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 73814.61538461
If we take 13 away from 20, we end up 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.

Our division results in 73814.61538461 with a remaining 7e-09.