We're dividing 99960412 by 839 
The aim is to understand the frequency of 839 in 99960412.

On to step 1:
9 divided by 839 is 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 839

Let's proceed to step 2:
839 goes into 99 0 times with a remainder of 99.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 99, we get 99.
Grab the next digit (9) from the dividend, add it to 99, then carry on: 999 / 839

On to step 3:
When dividing 999 by 839, we get 1 with a remainder of 160.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 839 from 999 and we're left with 160.
Bring next digit (6) of the dividend behind the 160 and repeat the process: 1606 / 839

Advancing to step 4:
1606 divided by 839 is 1 with a remainder of 767.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Subtracting 839 from 1606 leaves us with 767.
Append the next digit (0) from the dividend to 767 and continue with: 7670 / 839

Let's proceed to step 5:
When dividing 7670 by 839, we get 9 with a remainder of 119.
Record the quotient 9 as the next digit in the result. 
Result so far: 119.0
If we subtract 7551 from 7670, we get 119.
Take the next digit (4) from the dividend and append it to 119, then repeat: 1194 / 839

Step 6:
839 goes into 1194 1 times with a remainder of 355.
Use 1 as the next digit of our solution. 
Result so far: 1191.0
Deduct 839 from 1194 and we're left with 355.
Fetch the next digit (1) from the dividend, attach it to 355 and continue: 3551 / 839

On to step 7:
When dividing 3551 by 839, we get 4 with a remainder of 195.
Record the quotient 4 as the next digit in the result. 
Result so far: 11914.0
If we subtract 3356 from 3551, we get 195.
Fetch the next digit (2) from the dividend, attach it to 195 and continue: 1952 / 839

Step 8:
If we divide 1952 by 839, we get 2 and a remainder of 274.
Write down 2 as next digit of the result. 
Result so far: 119142.0
Deduct 1678 from 1952 and we're left with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Let's proceed to step 9:
839 can be fit into 2740 3 times, resulting in a remainder of 223.
The number 3 becomes the next digit in our result. 
Result so far: 119142.3
Deduct 2517 from 2740 and we're left with 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

Moving on to step 10:
The number 839 fits into 2230 2 times, leaving a remainder of 552.
The number 2 becomes the next digit in our result. 
Result so far: 119142.32
The remainder is 552 after subtracting 1678 from 2230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Moving on to step 11:
839 goes into 5520 6 times with a remainder of 486.
Put 6 as the next digit of the answer. 
Result so far: 119142.326
Subtract 5034 from 5520 to get 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

Moving on to step 12:
4860 divided by 839 is 5 with a remainder of 665.
The next digit of our result is 5. 
Result so far: 119142.3265
If we subtract 4195 from 4860, we get 665.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6650, and continue the process.

Let's proceed to step 13:
839 can be fit into 6650 7 times, resulting in a remainder of 777.
Write down 7 as next digit of the result. 
Result so far: 119142.32657
Subtracting 5873 from 6650 leaves us with 777.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7770, and continue the process.

Moving on to step 14:
When dividing 7770 by 839, we get 9 with a remainder of 219.
Write down 9 as next digit of the result. 
Result so far: 119142.326579
Deduct 7551 from 7770 and we're left with 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

Moving on to step 15:
2190 divided by 839 is 2 with a remainder of 512.
Write down 2 as next digit of the result. 
Result so far: 119142.3265792
If we subtract 1678 from 2190, we get 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

Moving on to step 16:
If we divide 5120 by 839, we get 6 and a remainder of 86.
The number 6 becomes the next digit in our result. 
Result so far: 119142.32657926
Subtract 5034 from 5120 to get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

In conclusion, the division gives 119142.32657926 with a balance of 8.6e-08.