12787662 ÷ 390 
The aim is to understand the frequency of 390 in 12787662.

Going ahead to step 1:
When dividing 1 by 390, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 390

Moving on to step 2:
The number 390 fits into 12 0 times, leaving a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Append the next digit (7) from the dividend to 12 and continue with: 127 / 390

On to step 3:
The number 390 fits into 127 0 times, leaving a remainder of 127.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 127 to get 127.
Include the next digit (8) from the dividend after 127, then repeat: 1278 / 390

Advancing to step 4:
390 can be fit into 1278 3 times, resulting in a remainder of 108.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 108 after subtracting 1170 from 1278.
Include the next digit (7) from the dividend after 108, then repeat: 1087 / 390

Advancing to step 5:
If we divide 1087 by 390, we get 2 and a remainder of 307.
Use 2 as the next digit of our solution. 
Result so far: 32.0
Subtracting 780 from 1087 leaves us with 307.
Append the next digit (6) from the dividend to 307 and continue with: 3076 / 390

Advancing to step 6:
If we divide 3076 by 390, we get 7 and a remainder of 346.
The number 7 becomes the next digit in our result. 
Result so far: 327.0
The remainder is 346 after subtracting 2730 from 3076.
Append the next digit (6) from the dividend to 346 and continue with: 3466 / 390

On to step 7:
390 can be fit into 3466 8 times, resulting in a remainder of 346.
Put 8 as the next digit of the answer. 
Result so far: 3278.0
The remainder is 346 after subtracting 3120 from 3466.
Include the next digit (2) from the dividend after 346, then repeat: 3462 / 390

Let's proceed to step 8:
3462 divided by 390 is 8 with a remainder of 342.
Write down 8 as next digit of the result. 
Result so far: 32788.0
Subtracting 3120 from 3462 leaves us with 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

On to step 9:
When dividing 3420 by 390, we get 8 with a remainder of 300.
The number 8 becomes the next digit in our result. 
Result so far: 32788.8
If we take 3120 away from 3420, we end up with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Advancing to step 10:
3000 divided by 390 is 7 with a remainder of 270.
Record the quotient 7 as the next digit in the result. 
Result so far: 32788.87
Deduct 2730 from 3000 and we're left with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Let's proceed to step 11:
If we divide 2700 by 390, we get 6 and a remainder of 360.
Use 6 as the next digit of our solution. 
Result so far: 32788.876
Subtract 2340 from 2700 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Step 12:
390 can be fit into 3600 9 times, resulting in a remainder of 90.
The number 9 becomes the next digit in our result. 
Result so far: 32788.8769
If we subtract 3510 from 3600, we get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Step 13:
If we divide 900 by 390, we get 2 and a remainder of 120.
Use 2 as the next digit of our solution. 
Result so far: 32788.87692
If we subtract 780 from 900, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Step 14:
390 goes into 1200 3 times with a remainder of 30.
The next digit of our result is 3. 
Result so far: 32788.876923
If we subtract 1170 from 1200, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 15:
390 can be fit into 300 0 times, resulting in a remainder of 300.
Put 0 as the next digit of the answer. 
Result so far: 32788.876923
Subtract 0 from 300 to get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Step 16:
When dividing 3000 by 390, we get 7 with a remainder of 270.
Use 7 as the next digit of our solution. 
Result so far: 32788.87692307
The remainder is 270 after subtracting 2730 from 3000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

In conclusion, the division gives 32788.87692307 with a balance of 2.7e-07.