12598363 ÷ 371 
The aim is to understand the frequency of 371 in 12598363.

Step 1:
1 divided by 371 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 371

Going ahead to step 2:
When dividing 12 by 371, we get 0 with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Bring next digit (5) of the dividend behind the 12 and repeat the process: 125 / 371

Let's proceed to step 3:
The number 371 fits into 125 0 times, leaving a remainder of 125.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 125 and we're left with 125.
Grab the next digit (9) from the dividend, add it to 125, then carry on: 1259 / 371

Step 4:
371 can be fit into 1259 3 times, resulting in a remainder of 146.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 1113 from 1259, we get 146.
Grab the next digit (8) from the dividend, add it to 146, then carry on: 1468 / 371

Advancing to step 5:
371 can be fit into 1468 3 times, resulting in a remainder of 355.
Record the quotient 3 as the next digit in the result. 
Result so far: 33.0
Subtract 1113 from 1468 to get 355.
Append the next digit (3) from the dividend to 355 and continue with: 3553 / 371

Step 6:
The number 371 fits into 3553 9 times, leaving a remainder of 214.
Use 9 as the next digit of our solution. 
Result so far: 339.0
The remainder is 214 after subtracting 3339 from 3553.
Fetch the next digit (6) from the dividend, attach it to 214 and continue: 2146 / 371

On to step 7:
2146 divided by 371 is 5 with a remainder of 291.
Use 5 as the next digit of our solution. 
Result so far: 3395.0
If we subtract 1855 from 2146, we get 291.
Grab the next digit (3) from the dividend, add it to 291, then carry on: 2913 / 371

Moving on to step 8:
When dividing 2913 by 371, we get 7 with a remainder of 316.
Write down 7 as next digit of the result. 
Result so far: 33957.0
If we take 2597 away from 2913, we end up with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Let's proceed to step 9:
When dividing 3160 by 371, we get 8 with a remainder of 192.
Write down 8 as next digit of the result. 
Result so far: 33957.8
Deduct 2968 from 3160 and we're left with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Step 10:
371 goes into 1920 5 times with a remainder of 65.
The number 5 becomes the next digit in our result. 
Result so far: 33957.85
If we subtract 1855 from 1920, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 11:
371 can be fit into 650 1 times, resulting in a remainder of 279.
Write down 1 as next digit of the result. 
Result so far: 33957.851
Deduct 371 from 650 and we're left with 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

Step 12:
The number 371 fits into 2790 7 times, leaving a remainder of 193.
Use 7 as the next digit of our solution. 
Result so far: 33957.8517
Deduct 2597 from 2790 and we're left with 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Step 13:
1930 divided by 371 is 5 with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 33957.85175
Subtracting 1855 from 1930 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 14:
371 goes into 750 2 times with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 33957.851752
Deduct 742 from 750 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:
371 goes into 80 0 times with a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 33957.851752
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 16:
The number 371 fits into 800 2 times, leaving a remainder of 58.
The next digit of our result is 2. 
Result so far: 33957.85175202
If we take 742 away from 800, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The final outcome is 33957.85175202, with a leftover of 5.8e-08.