We look at the division of 9257858 by 439 
The aim is to understand the frequency of 439 in 9257858.

On to step 1:
The number 439 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Include the next digit (2) from the dividend after 9, then repeat: 92 / 439

Advancing to step 2:
If we divide 92 by 439, we get 0 and a remainder of 92.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 92 to get 92.
Grab the next digit (5) from the dividend, add it to 92, then carry on: 925 / 439

Let's proceed to step 3:
If we divide 925 by 439, we get 2 and a remainder of 47.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 878 from 925, we get 47.
Grab the next digit (7) from the dividend, add it to 47, then carry on: 477 / 439

Going ahead to step 4:
439 can be fit into 477 1 times, resulting in a remainder of 38.
Write down 1 as next digit of the result. 
Result so far: 21.0
The remainder is 38 after subtracting 439 from 477.
Include the next digit (8) from the dividend after 38, then repeat: 388 / 439

Step 5:
439 goes into 388 0 times with a remainder of 388.
Write down 0 as next digit of the result. 
Result so far: 210.0
If we subtract 0 from 388, we get 388.
Include the next digit (5) from the dividend after 388, then repeat: 3885 / 439

On to step 6:
When dividing 3885 by 439, we get 8 with a remainder of 373.
The next digit of our result is 8. 
Result so far: 2108.0
Subtract 3512 from 3885 to get 373.
Bring next digit (8) of the dividend behind the 373 and repeat the process: 3738 / 439

Going ahead to step 7:
When dividing 3738 by 439, we get 8 with a remainder of 226.
Write down 8 as next digit of the result. 
Result so far: 21088.0
The remainder is 226 after subtracting 3512 from 3738.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Moving on to step 8:
The number 439 fits into 2260 5 times, leaving a remainder of 65.
Use 5 as the next digit of our solution. 
Result so far: 21088.5
Subtracting 2195 from 2260 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Step 9:
The number 439 fits into 650 1 times, leaving a remainder of 211.
Record the quotient 1 as the next digit in the result. 
Result so far: 21088.51
Deduct 439 from 650 and we're left with 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Going ahead to step 10:
When dividing 2110 by 439, we get 4 with a remainder of 354.
The number 4 becomes the next digit in our result. 
Result so far: 21088.514
Subtracting 1756 from 2110 leaves us with 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

On to step 11:
439 goes into 3540 8 times with a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 21088.5148
The remainder is 28 after subtracting 3512 from 3540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 12:
If we divide 280 by 439, we get 0 and a remainder of 280.
Write down 0 as next digit of the result. 
Result so far: 21088.5148
The remainder is 280 after subtracting 0 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Let's proceed to step 13:
2800 divided by 439 is 6 with a remainder of 166.
Write down 6 as next digit of the result. 
Result so far: 21088.514806
Deduct 2634 from 2800 and we're left with 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Step 14:
439 can be fit into 1660 3 times, resulting in a remainder of 343.
Put 3 as the next digit of the answer. 
Result so far: 21088.5148063
If we subtract 1317 from 1660, we get 343.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3430, and continue the process.

Going ahead to step 15:
The number 439 fits into 3430 7 times, leaving a remainder of 357.
Record the quotient 7 as the next digit in the result. 
Result so far: 21088.51480637
If we subtract 3073 from 3430, we get 357.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3570, and continue the process.

The quotient of the division is 21088.51480637, and the remainder is 3.57e-07.