10785388 ÷ 39 
The aim is to understand the frequency of 39 in 10785388.

Let's proceed to step 1:
The number 39 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 39

Advancing to step 2:
39 can be fit into 10 0 times, resulting in a remainder of 10.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 10, we end up with 10.
Include the next digit (7) from the dividend after 10, then repeat: 107 / 39

Moving on to step 3:
The number 39 fits into 107 2 times, leaving a remainder of 29.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 78 from 107 to get 29.
Take the next digit (8) from the dividend and append it to 29, then repeat: 298 / 39

Advancing to step 4:
39 goes into 298 7 times with a remainder of 25.
Record the quotient 7 as the next digit in the result. 
Result so far: 27.0
If we subtract 273 from 298, we get 25.
Grab the next digit (5) from the dividend, add it to 25, then carry on: 255 / 39

Step 5:
255 divided by 39 is 6 with a remainder of 21.
Put 6 as the next digit of the answer. 
Result so far: 276.0
Subtracting 234 from 255 leaves us with 21.
Grab the next digit (3) from the dividend, add it to 21, then carry on: 213 / 39

On to step 6:
213 divided by 39 is 5 with a remainder of 18.
The number 5 becomes the next digit in our result. 
Result so far: 2765.0
If we take 195 away from 213, we end up with 18.
Append the next digit (8) from the dividend to 18 and continue with: 188 / 39

Advancing to step 7:
The number 39 fits into 188 4 times, leaving a remainder of 32.
The number 4 becomes the next digit in our result. 
Result so far: 27654.0
Deduct 156 from 188 and we're left with 32.
Grab the next digit (8) from the dividend, add it to 32, then carry on: 328 / 39

Moving on to step 8:
If we divide 328 by 39, we get 8 and a remainder of 16.
The next digit of our result is 8. 
Result so far: 276548.0
If we subtract 312 from 328, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 9:
39 can be fit into 160 4 times, resulting in a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 276548.4
If we subtract 156 from 160, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 10:
If we divide 40 by 39, we get 1 and a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 276548.41
If we subtract 39 from 40, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 11:
The number 39 fits into 10 0 times, leaving a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 276548.41
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 12:
If we divide 100 by 39, we get 2 and a remainder of 22.
Use 2 as the next digit of our solution. 
Result so far: 276548.4102
Subtract 78 from 100 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 13:
220 divided by 39 is 5 with a remainder of 25.
The next digit of our result is 5. 
Result so far: 276548.41025
Subtract 195 from 220 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 14:
39 goes into 250 6 times with a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 276548.410256
Subtract 234 from 250 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 15:
39 can be fit into 160 4 times, resulting in a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 276548.4102564
The remainder is 4 after subtracting 156 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 16:
The number 39 fits into 40 1 times, leaving a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 276548.41025641
Subtract 39 from 40 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

After the division, we end up with 276548.41025641 and a remainder of 1e-09.