7538099 ÷ 839 
The aim is to understand the frequency of 839 in 7538099.

Let's proceed to step 1:
839 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 839

Let's proceed to step 2:
The number 839 fits into 75 0 times, leaving a remainder of 75.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 75 and we're left with 75.
Take the next digit (3) from the dividend and append it to 75, then repeat: 753 / 839

Advancing to step 3:
If we divide 753 by 839, we get 0 and a remainder of 753.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 753 to get 753.
Include the next digit (8) from the dividend after 753, then repeat: 7538 / 839

On to step 4:
When dividing 7538 by 839, we get 8 with a remainder of 826.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
The remainder is 826 after subtracting 6712 from 7538.
Append the next digit (0) from the dividend to 826 and continue with: 8260 / 839

Let's proceed to step 5:
If we divide 8260 by 839, we get 9 and a remainder of 709.
Put 9 as the next digit of the answer. 
Result so far: 89.0
Deduct 7551 from 8260 and we're left with 709.
Include the next digit (9) from the dividend after 709, then repeat: 7099 / 839

Let's proceed to step 6:
7099 divided by 839 is 8 with a remainder of 387.
Use 8 as the next digit of our solution. 
Result so far: 898.0
If we take 6712 away from 7099, we end up with 387.
Fetch the next digit (9) from the dividend, attach it to 387 and continue: 3879 / 839

Let's proceed to step 7:
839 goes into 3879 4 times with a remainder of 523.
The next digit of our result is 4. 
Result so far: 8984.0
The remainder is 523 after subtracting 3356 from 3879.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5230, and continue the process.

Step 8:
839 goes into 5230 6 times with a remainder of 196.
Write down 6 as next digit of the result. 
Result so far: 8984.6
Subtracting 5034 from 5230 leaves us with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Moving on to step 9:
839 goes into 1960 2 times with a remainder of 282.
Record the quotient 2 as the next digit in the result. 
Result so far: 8984.62
If we subtract 1678 from 1960, we get 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

Step 10:
The number 839 fits into 2820 3 times, leaving a remainder of 303.
The next digit of our result is 3. 
Result so far: 8984.623
Subtract 2517 from 2820 to get 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Going ahead to step 11:
839 goes into 3030 3 times with a remainder of 513.
Record the quotient 3 as the next digit in the result. 
Result so far: 8984.6233
Subtracting 2517 from 3030 leaves us with 513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

In conclusion, the division gives 8984.6233 with a balance of 0.00513.