12597757 divided by 417 
The aim is to understand the frequency of 417 in 12597757.

Step 1:
417 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 417

Advancing to step 2:
The number 417 fits into 12 0 times, leaving a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Take the next digit (5) from the dividend and append it to 12, then repeat: 125 / 417

Moving on to step 3:
417 goes into 125 0 times with a remainder of 125.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 125, we get 125.
Fetch the next digit (9) from the dividend, attach it to 125 and continue: 1259 / 417

Advancing to step 4:
The number 417 fits into 1259 3 times, leaving a remainder of 8.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 1251 from 1259 to get 8.
Bring next digit (7) of the dividend behind the 8 and repeat the process: 87 / 417

Advancing to step 5:
If we divide 87 by 417, we get 0 and a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 30.0
Deduct 0 from 87 and we're left with 87.
Bring next digit (7) of the dividend behind the 87 and repeat the process: 877 / 417

Advancing to step 6:
877 divided by 417 is 2 with a remainder of 43.
The number 2 becomes the next digit in our result. 
Result so far: 302.0
Subtract 834 from 877 to get 43.
Bring next digit (5) of the dividend behind the 43 and repeat the process: 435 / 417

On to step 7:
435 divided by 417 is 1 with a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 3021.0
Subtract 417 from 435 to get 18.
Include the next digit (7) from the dividend after 18, then repeat: 187 / 417

Going ahead to step 8:
The number 417 fits into 187 0 times, leaving a remainder of 187.
The next digit of our result is 0. 
Result so far: 30210.0
If we subtract 0 from 187, we get 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

On to step 9:
When dividing 1870 by 417, we get 4 with a remainder of 202.
Use 4 as the next digit of our solution. 
Result so far: 30210.4
Deduct 1668 from 1870 and we're left with 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Advancing to step 10:
417 goes into 2020 4 times with a remainder of 352.
Use 4 as the next digit of our solution. 
Result so far: 30210.44
Subtracting 1668 from 2020 leaves us with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

After the division, we end up with 30210.44 and a remainder of 0.352.