438030 ÷ 39 
The aim is to understand the frequency of 39 in 438030.

Let's proceed 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
Deduct 0 from 4 and we're left with 4.
Take the next digit (3) from the dividend and append it to 4, then repeat: 43 / 39

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.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 39

Step 3:
The number 39 fits into 48 1 times, leaving a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 11.0
If we subtract 39 from 48, we get 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 39

Moving on to step 4:
39 can be fit into 90 2 times, resulting in a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 112.0
If we take 78 away from 90, we end up with 12.
Append the next digit (3) from the dividend to 12 and continue with: 123 / 39

Let's proceed to step 5:
123 divided by 39 is 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 1123.0
Subtract 117 from 123 to get 6.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 39

Let's proceed to step 6:
If we divide 60 by 39, we get 1 and a remainder of 21.
The next digit of our result is 1. 
Result so far: 11231.0
The remainder is 21 after subtracting 39 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 7:
If we divide 210 by 39, we get 5 and a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 11231.5
Subtracting 195 from 210 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 8:
When dividing 150 by 39, we get 3 with a remainder of 33.
Put 3 as the next digit of the answer. 
Result so far: 11231.53
If we take 117 away from 150, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Moving on to step 9:
330 divided by 39 is 8 with a remainder of 18.
Write down 8 as next digit of the result. 
Result so far: 11231.538
If we take 312 away from 330, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 10:
When dividing 180 by 39, we get 4 with a remainder of 24.
Use 4 as the next digit of our solution. 
Result so far: 11231.5384
Subtracting 156 from 180 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 11:
When dividing 240 by 39, we get 6 with a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 11231.53846
Subtracting 234 from 240 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 12:
The number 39 fits into 60 1 times, leaving a remainder of 21.
Use 1 as the next digit of our solution. 
Result so far: 11231.538461
If we subtract 39 from 60, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 13:
If we divide 210 by 39, we get 5 and a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 11231.5384615
The remainder is 15 after subtracting 195 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 14:
150 divided by 39 is 3 with a remainder of 33.
Use 3 as the next digit of our solution. 
Result so far: 11231.53846153
If we subtract 117 from 150, we get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

The final outcome is 11231.53846153, with a leftover of 3.3e-08.