We look at the division of 97090846 by 13 
The aim is to understand the frequency of 13 in 97090846.

On to step 1:
13 goes into 9 0 times with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Fetch the next digit (7) from the dividend, attach it to 9 and continue: 97 / 13

Let's proceed to step 2:
If we divide 97 by 13, we get 7 and a remainder of 6.
Write down 7 as next digit of the result. 
Result so far: 7.0
Deduct 91 from 97 and we're left with 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 13

On to step 3:
60 divided by 13 is 4 with a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 74.0
Subtract 52 from 60 to get 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 13

Going ahead to step 4:
13 goes into 89 6 times with a remainder of 11.
The number 6 becomes the next digit in our result. 
Result so far: 746.0
If we take 78 away from 89, we end up with 11.
Fetch the next digit (0) from the dividend, attach it to 11 and continue: 110 / 13

Let's proceed to step 5:
13 goes into 110 8 times with a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 7468.0
Deduct 104 from 110 and we're left with 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 13

On to step 6:
13 goes into 68 5 times with a remainder of 3.
Use 5 as the next digit of our solution. 
Result so far: 74685.0
Deduct 65 from 68 and we're left with 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 13

Let's proceed to step 7:
When dividing 34 by 13, we get 2 with a remainder of 8.
The next digit of our result is 2. 
Result so far: 746852.0
Deduct 26 from 34 and we're left with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 13

Moving on to step 8:
If we divide 86 by 13, we get 6 and a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 7468526.0
Subtracting 78 from 86 leaves us 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 9:
13 goes into 80 6 times with a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 7468526.6
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.

Let's proceed to step 10:
13 can be fit into 20 1 times, resulting in a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 7468526.61
The remainder is 7 after subtracting 13 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 11:
13 can be fit into 70 5 times, resulting in a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 7468526.615
Deduct 65 from 70 and we're left 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.

Let's proceed to step 12:
13 goes into 50 3 times with a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 7468526.6153
If we take 39 away from 50, we end up 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.

Moving on to step 13:
110 divided by 13 is 8 with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 7468526.61538
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.

Advancing to step 14:
If we divide 60 by 13, we get 4 and a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 7468526.615384
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.

Let's proceed to step 15:
When dividing 80 by 13, we get 6 with a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 7468526.6153846
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.

Let's proceed to step 16:
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: 7468526.61538461
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.

After the division, we end up with 7468526.61538461 and a remainder of 7e-09.