616819 ÷ 39 
The aim is to understand the frequency of 39 in 616819.

Let's proceed to step 1:
6 divided by 39 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (1) from the dividend and append it to 6, then repeat: 61 / 39

Going ahead to step 2:
61 divided by 39 is 1 with a remainder of 22.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 39 from 61 to get 22.
Append the next digit (6) from the dividend to 22 and continue with: 226 / 39

Moving on to step 3:
If we divide 226 by 39, we get 5 and a remainder of 31.
The next digit of our result is 5. 
Result so far: 15.0
Deduct 195 from 226 and we're left with 31.
Take the next digit (8) from the dividend and append it to 31, then repeat: 318 / 39

Going ahead to step 4:
When dividing 318 by 39, we get 8 with a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 158.0
Deduct 312 from 318 and we're left with 6.
Take the next digit (1) from the dividend and append it to 6, then repeat: 61 / 39

Moving on to step 5:
61 divided by 39 is 1 with a remainder of 22.
Write down 1 as next digit of the result. 
Result so far: 1581.0
Subtract 39 from 61 to get 22.
Append the next digit (9) from the dividend to 22 and continue with: 229 / 39

Advancing to step 6:
229 divided by 39 is 5 with a remainder of 34.
Put 5 as the next digit of the answer. 
Result so far: 15815.0
The remainder is 34 after subtracting 195 from 229.
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:
39 can be fit into 340 8 times, resulting in a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 15815.8
Subtract 312 from 340 to get 28.
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 8:
39 can be fit into 280 7 times, resulting in a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 15815.87
If we subtract 273 from 280, we 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.

Moving on to step 9:
If we divide 70 by 39, we get 1 and a remainder of 31.
The next digit of our result is 1. 
Result so far: 15815.871
If we take 39 away from 70, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 10:
When dividing 310 by 39, we get 7 with a remainder of 37.
Use 7 as the next digit of our solution. 
Result so far: 15815.8717
If we subtract 273 from 310, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Step 11:
39 can be fit into 370 9 times, resulting in a remainder of 19.
Use 9 as the next digit of our solution. 
Result so far: 15815.87179
If we subtract 351 from 370, we 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.

Let's proceed to step 12:
The number 39 fits into 190 4 times, leaving a remainder of 34.
Put 4 as the next digit of the answer. 
Result so far: 15815.871794
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.

On to step 13:
340 divided by 39 is 8 with a remainder of 28.
Put 8 as the next digit of the answer. 
Result so far: 15815.8717948
If we subtract 312 from 340, we get 28.
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 14:
280 divided by 39 is 7 with a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 15815.87179487
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.

After the division, we end up with 15815.87179487 and a remainder of 7e-09.