906198 divided by 13 
The aim is to understand the frequency of 13 in 906198.

Step 1:
When dividing 9 by 13, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 13

Going ahead to step 2:
13 can be fit into 90 6 times, resulting in a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we subtract 78 from 90, we get 12.
Append the next digit (6) from the dividend to 12 and continue with: 126 / 13

Going ahead to step 3:
126 divided by 13 is 9 with a remainder of 9.
Write down 9 as next digit of the result. 
Result so far: 69.0
If we take 117 away from 126, we end up with 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 13

Moving on to step 4:
13 can be fit into 91 7 times, resulting in a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 697.0
Subtracting 91 from 91 leaves us with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 13

Let's proceed to step 5:
13 goes into 9 0 times with a remainder of 9.
The next digit of our result is 0. 
Result so far: 6970.0
Subtract 0 from 9 to get 9.
Fetch the next digit (8) from the dividend, attach it to 9 and continue: 98 / 13

Advancing to step 6:
The number 13 fits into 98 7 times, leaving a remainder of 7.
Put 7 as the next digit of the answer. 
Result so far: 69707.0
The remainder is 7 after subtracting 91 from 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 7:
The number 13 fits into 70 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 69707.5
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.

On to step 8:
50 divided by 13 is 3 with a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 69707.53
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.

Advancing to step 9:
The number 13 fits into 110 8 times, leaving a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 69707.538
Subtracting 104 from 110 leaves us 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.

On to step 10:
The number 13 fits into 60 4 times, leaving a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 69707.5384
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.

Moving on to step 11:
When dividing 80 by 13, we get 6 with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 69707.53846
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.

Step 12:
The number 13 fits into 20 1 times, leaving a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 69707.538461
Subtracting 13 from 20 leaves us 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.

Advancing to step 13:
If we divide 70 by 13, we get 5 and a remainder of 5.
The next digit of our result is 5. 
Result so far: 69707.5384615
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.

On to step 14:
The number 13 fits into 50 3 times, leaving a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 69707.53846153
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.

The quotient of the division is 69707.53846153, and the remainder is 1.1e-08.