719688 divided by 39 
The aim is to understand the frequency of 39 in 719688.

Advancing to step 1:
If we divide 7 by 39, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (1) from the dividend to 7 and continue with: 71 / 39

Moving on to step 2:
When dividing 71 by 39, we get 1 with a remainder of 32.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 39 from 71 leaves us with 32.
Include the next digit (9) from the dividend after 32, then repeat: 329 / 39

Advancing to step 3:
If we divide 329 by 39, we get 8 and a remainder of 17.
The next digit of our result is 8. 
Result so far: 18.0
Subtracting 312 from 329 leaves us with 17.
Append the next digit (6) from the dividend to 17 and continue with: 176 / 39

Moving on to step 4:
When dividing 176 by 39, we get 4 with a remainder of 20.
The next digit of our result is 4. 
Result so far: 184.0
If we take 156 away from 176, we end up with 20.
Include the next digit (8) from the dividend after 20, then repeat: 208 / 39

Step 5:
If we divide 208 by 39, we get 5 and a remainder of 13.
Use 5 as the next digit of our solution. 
Result so far: 1845.0
Subtracting 195 from 208 leaves us with 13.
Append the next digit (8) from the dividend to 13 and continue with: 138 / 39

Let's proceed to step 6:
39 goes into 138 3 times with a remainder of 21.
Use 3 as the next digit of our solution. 
Result so far: 18453.0
If we subtract 117 from 138, 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.

Advancing to step 7:
39 can be fit into 210 5 times, resulting in a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 18453.5
Deduct 195 from 210 and we're left 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.

Moving on to step 8:
If we divide 150 by 39, we get 3 and a remainder of 33.
The next digit of our result is 3. 
Result so far: 18453.53
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.

Step 9:
39 can be fit into 330 8 times, resulting in a remainder of 18.
The number 8 becomes the next digit in our result. 
Result so far: 18453.538
If we subtract 312 from 330, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 10:
The number 39 fits into 180 4 times, leaving a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 18453.5384
If we take 156 away from 180, we end up 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.

Step 11:
240 divided by 39 is 6 with a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 18453.53846
Subtract 234 from 240 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 12:
39 goes into 60 1 times with a remainder of 21.
Put 1 as the next digit of the answer. 
Result so far: 18453.538461
If we take 39 away from 60, we end up with 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.
Put 5 as the next digit of the answer. 
Result so far: 18453.5384615
Subtract 195 from 210 to get 15.
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.
Record the quotient 3 as the next digit in the result. 
Result so far: 18453.53846153
The remainder is 33 after subtracting 117 from 150.
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 18453.53846153, with a leftover of 3.3e-08.