We're dividing 125817 by 49 
The aim is to understand the frequency of 49 in 125817.

Step 1:
1 divided by 49 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 49

Step 2:
If we divide 12 by 49, we get 0 and a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Grab the next digit (5) from the dividend, add it to 12, then carry on: 125 / 49

On to step 3:
If we divide 125 by 49, we get 2 and a remainder of 27.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 27 after subtracting 98 from 125.
Grab the next digit (8) from the dividend, add it to 27, then carry on: 278 / 49

On to step 4:
49 can be fit into 278 5 times, resulting in a remainder of 33.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Subtracting 245 from 278 leaves us with 33.
Grab the next digit (1) from the dividend, add it to 33, then carry on: 331 / 49

Step 5:
331 divided by 49 is 6 with a remainder of 37.
Record the quotient 6 as the next digit in the result. 
Result so far: 256.0
The remainder is 37 after subtracting 294 from 331.
Take the next digit (7) from the dividend and append it to 37, then repeat: 377 / 49

Let's proceed to step 6:
If we divide 377 by 49, we get 7 and a remainder of 34.
Record the quotient 7 as the next digit in the result. 
Result so far: 2567.0
The remainder is 34 after subtracting 343 from 377.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 7:
The number 49 fits into 340 6 times, leaving a remainder of 46.
Use 6 as the next digit of our solution. 
Result so far: 2567.6
Subtract 294 from 340 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 8:
The number 49 fits into 460 9 times, leaving a remainder of 19.
Use 9 as the next digit of our solution. 
Result so far: 2567.69
Subtracting 441 from 460 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 9:
49 can be fit into 190 3 times, resulting in a remainder of 43.
Use 3 as the next digit of our solution. 
Result so far: 2567.693
The remainder is 43 after subtracting 147 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

On to step 10:
430 divided by 49 is 8 with a remainder of 38.
The number 8 becomes the next digit in our result. 
Result so far: 2567.6938
If we subtract 392 from 430, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 11:
If we divide 380 by 49, we get 7 and a remainder of 37.
The number 7 becomes the next digit in our result. 
Result so far: 2567.69387
The remainder is 37 after subtracting 343 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 12:
49 goes into 370 7 times with a remainder of 27.
Use 7 as the next digit of our solution. 
Result so far: 2567.693877
If we subtract 343 from 370, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

The final outcome is 2567.693877, with a leftover of 2.7e-06.