We're dividing 3996441 by 257 
The aim is to understand the frequency of 257 in 3996441.

On to step 1:
The number 257 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 257

Advancing to step 2:
The number 257 fits into 39 0 times, leaving a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Bring next digit (9) of the dividend behind the 39 and repeat the process: 399 / 257

Advancing to step 3:
399 divided by 257 is 1 with a remainder of 142.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 257 from 399 leaves us with 142.
Grab the next digit (6) from the dividend, add it to 142, then carry on: 1426 / 257

Moving on to step 4:
The number 257 fits into 1426 5 times, leaving a remainder of 141.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we subtract 1285 from 1426, we get 141.
Append the next digit (4) from the dividend to 141 and continue with: 1414 / 257

Step 5:
257 can be fit into 1414 5 times, resulting in a remainder of 129.
Put 5 as the next digit of the answer. 
Result so far: 155.0
Subtracting 1285 from 1414 leaves us with 129.
Grab the next digit (4) from the dividend, add it to 129, then carry on: 1294 / 257

Advancing to step 6:
257 can be fit into 1294 5 times, resulting in a remainder of 9.
Put 5 as the next digit of the answer. 
Result so far: 1555.0
Subtract 1285 from 1294 to get 9.
Grab the next digit (1) from the dividend, add it to 9, then carry on: 91 / 257

Let's proceed to step 7:
91 divided by 257 is 0 with a remainder of 91.
Put 0 as the next digit of the answer. 
Result so far: 15550.0
Deduct 0 from 91 and we're left with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Let's proceed to step 8:
910 divided by 257 is 3 with a remainder of 139.
The number 3 becomes the next digit in our result. 
Result so far: 15550.3
The remainder is 139 after subtracting 771 from 910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

On to step 9:
The number 257 fits into 1390 5 times, leaving a remainder of 105.
Use 5 as the next digit of our solution. 
Result so far: 15550.35
The remainder is 105 after subtracting 1285 from 1390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Advancing to step 10:
When dividing 1050 by 257, we get 4 with a remainder of 22.
Use 4 as the next digit of our solution. 
Result so far: 15550.354
Deduct 1028 from 1050 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 11:
220 divided by 257 is 0 with a remainder of 220.
The number 0 becomes the next digit in our result. 
Result so far: 15550.354
If we subtract 0 from 220, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Step 12:
If we divide 2200 by 257, we get 8 and a remainder of 144.
Use 8 as the next digit of our solution. 
Result so far: 15550.35408
The remainder is 144 after subtracting 2056 from 2200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

On to step 13:
The number 257 fits into 1440 5 times, leaving a remainder of 155.
Use 5 as the next digit of our solution. 
Result so far: 15550.354085
Subtract 1285 from 1440 to get 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Let's proceed to step 14:
1550 divided by 257 is 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 15550.3540856
If we subtract 1542 from 1550, we get 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 257, we get 0 with a remainder of 80.
The next digit of our result is 0. 
Result so far: 15550.3540856
Subtract 0 from 80 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final outcome is 15550.3540856, with a leftover of 8e-08.