We look at the division of 916051 by 13 
The aim is to understand the frequency of 13 in 916051.

Let's proceed to step 1:
If we divide 9 by 13, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 13

Going ahead to step 2:
When dividing 91 by 13, we get 7 with a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 91 from 91 to get 0.
Grab the next digit (6) from the dividend, add it to 0, then carry on: 6 / 13

Going ahead to step 3:
6 divided by 13 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 70.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 13

On to step 4:
60 divided by 13 is 4 with a remainder of 8.
The next digit of our result is 4. 
Result so far: 704.0
Subtract 52 from 60 to get 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 13

Going ahead to step 5:
13 goes into 85 6 times with a remainder of 7.
Record the quotient 6 as the next digit in the result. 
Result so far: 7046.0
Subtract 78 from 85 to get 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 13

Let's proceed to step 6:
13 goes into 71 5 times with a remainder of 6.
Use 5 as the next digit of our solution. 
Result so far: 70465.0
If we subtract 65 from 71, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 7:
The number 13 fits into 60 4 times, leaving a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 70465.4
If we subtract 52 from 60, we 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 8:
The number 13 fits into 80 6 times, leaving a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 70465.46
Deduct 78 from 80 and we're left with 2.
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 9:
If we divide 20 by 13, we get 1 and a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 70465.461
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.

Step 10:
70 divided by 13 is 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 70465.4615
If we take 65 away from 70, we end up 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.

Step 11:
13 goes into 50 3 times with a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 70465.46153
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.

On to step 12:
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: 70465.461538
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.

Moving on to step 13:
If we divide 60 by 13, we get 4 and a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 70465.4615384
If we take 52 away from 60, we end up 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.

Let's proceed to step 14:
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: 70465.46153846
Subtracting 78 from 80 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

After the division, we end up with 70465.46153846 and a remainder of 2e-09.