509048 ÷ 84 
The aim is to understand the frequency of 84 in 509048.

On to step 1:
84 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 84

Let's proceed to step 2:
84 can be fit into 50 0 times, resulting in a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 50 leaves us with 50.
Append the next digit (9) from the dividend to 50 and continue with: 509 / 84

Step 3:
If we divide 509 by 84, we get 6 and a remainder of 5.
The next digit of our result is 6. 
Result so far: 6.0
Deduct 504 from 509 and we're left with 5.
Include the next digit (0) from the dividend after 5, then repeat: 50 / 84

Advancing to step 4:
The number 84 fits into 50 0 times, leaving a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 60.0
Subtract 0 from 50 to get 50.
Take the next digit (4) from the dividend and append it to 50, then repeat: 504 / 84

Let's proceed to step 5:
The number 84 fits into 504 6 times, leaving a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 606.0
If we subtract 504 from 504, we get 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 84

On to step 6:
8 divided by 84 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 6060.0
Deduct 0 from 8 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 7:
If we divide 80 by 84, we get 0 and a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 6060.0
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 8:
If we divide 800 by 84, we get 9 and a remainder of 44.
Write down 9 as next digit of the result. 
Result so far: 6060.09
The remainder is 44 after subtracting 756 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 9:
440 divided by 84 is 5 with a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 6060.095
Subtracting 420 from 440 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 10:
When dividing 200 by 84, we get 2 with a remainder of 32.
Put 2 as the next digit of the answer. 
Result so far: 6060.0952
If we take 168 away from 200, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 11:
When dividing 320 by 84, we get 3 with a remainder of 68.
Write down 3 as next digit of the result. 
Result so far: 6060.09523
Deduct 252 from 320 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 12:
If we divide 680 by 84, we get 8 and a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 6060.095238
The remainder is 8 after subtracting 672 from 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 13:
The number 84 fits into 80 0 times, leaving a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 6060.095238
Deduct 0 from 80 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 14:
84 goes into 800 9 times with a remainder of 44.
The number 9 becomes the next digit in our result. 
Result so far: 6060.09523809
If we subtract 756 from 800, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

The final outcome is 6060.09523809, with a leftover of 4.4e-08.