438628 ÷ 39 
The aim is to understand the frequency of 39 in 438628.

Moving on to step 1:
4 divided by 39 is 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 39

Going ahead to step 2:
43 divided by 39 is 1 with a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 39 from 43 leaves us with 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 39

Step 3:
39 can be fit into 48 1 times, resulting in a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtract 39 from 48 to get 9.
Append the next digit (6) from the dividend to 9 and continue with: 96 / 39

Let's proceed to step 4:
39 can be fit into 96 2 times, resulting in a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 112.0
Deduct 78 from 96 and we're left with 18.
Bring next digit (2) of the dividend behind the 18 and repeat the process: 182 / 39

Step 5:
182 divided by 39 is 4 with a remainder of 26.
Record the quotient 4 as the next digit in the result. 
Result so far: 1124.0
The remainder is 26 after subtracting 156 from 182.
Take the next digit (8) from the dividend and append it to 26, then repeat: 268 / 39

On to step 6:
The number 39 fits into 268 6 times, leaving a remainder of 34.
Use 6 as the next digit of our solution. 
Result so far: 11246.0
Subtract 234 from 268 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 7:
The number 39 fits into 340 8 times, leaving a remainder of 28.
Put 8 as the next digit of the answer. 
Result so far: 11246.8
Subtracting 312 from 340 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 8:
When dividing 280 by 39, we get 7 with a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 11246.87
Subtract 273 from 280 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 9:
If we divide 70 by 39, we get 1 and a remainder of 31.
The number 1 becomes the next digit in our result. 
Result so far: 11246.871
If we subtract 39 from 70, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 10:
The number 39 fits into 310 7 times, leaving a remainder of 37.
Write down 7 as next digit of the result. 
Result so far: 11246.8717
Subtracting 273 from 310 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 11:
The number 39 fits into 370 9 times, leaving a remainder of 19.
Use 9 as the next digit of our solution. 
Result so far: 11246.87179
Subtract 351 from 370 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 12:
39 can be fit into 190 4 times, resulting in a remainder of 34.
Use 4 as the next digit of our solution. 
Result so far: 11246.871794
The remainder is 34 after subtracting 156 from 190.
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 13:
39 can be fit into 340 8 times, resulting in a remainder of 28.
Record the quotient 8 as the next digit in the result. 
Result so far: 11246.8717948
The remainder is 28 after subtracting 312 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 14:
When dividing 280 by 39, we get 7 with a remainder of 7.
Record the quotient 7 as the next digit in the result. 
Result so far: 11246.87179487
The remainder is 7 after subtracting 273 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

In conclusion, the division gives 11246.87179487 with a balance of 7e-09.