We're dividing 21613311 by 684 
The aim is to understand the frequency of 684 in 21613311.

Advancing to step 1:
684 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 684

Step 2:
If we divide 21 by 684, we get 0 and a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Take the next digit (6) from the dividend and append it to 21, then repeat: 216 / 684

Step 3:
216 divided by 684 is 0 with a remainder of 216.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 216 and we're left with 216.
Bring next digit (1) of the dividend behind the 216 and repeat the process: 2161 / 684

On to step 4:
684 can be fit into 2161 3 times, resulting in a remainder of 109.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 2052 away from 2161, we end up with 109.
Grab the next digit (3) from the dividend, add it to 109, then carry on: 1093 / 684

Going ahead to step 5:
684 can be fit into 1093 1 times, resulting in a remainder of 409.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
If we subtract 684 from 1093, we get 409.
Include the next digit (3) from the dividend after 409, then repeat: 4093 / 684

On to step 6:
684 can be fit into 4093 5 times, resulting in a remainder of 673.
Use 5 as the next digit of our solution. 
Result so far: 315.0
Subtracting 3420 from 4093 leaves us with 673.
Include the next digit (1) from the dividend after 673, then repeat: 6731 / 684

Let's proceed to step 7:
If we divide 6731 by 684, we get 9 and a remainder of 575.
The number 9 becomes the next digit in our result. 
Result so far: 3159.0
If we subtract 6156 from 6731, we get 575.
Bring next digit (1) of the dividend behind the 575 and repeat the process: 5751 / 684

Going ahead to step 8:
If we divide 5751 by 684, we get 8 and a remainder of 279.
Write down 8 as next digit of the result. 
Result so far: 31598.0
If we take 5472 away from 5751, we end up with 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

On to step 9:
When dividing 2790 by 684, we get 4 with a remainder of 54.
The number 4 becomes the next digit in our result. 
Result so far: 31598.4
If we subtract 2736 from 2790, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 10:
684 goes into 540 0 times with a remainder of 540.
The number 0 becomes the next digit in our result. 
Result so far: 31598.4
Deduct 0 from 540 and we're left with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

On to step 11:
684 can be fit into 5400 7 times, resulting in a remainder of 612.
Put 7 as the next digit of the answer. 
Result so far: 31598.407
If we subtract 4788 from 5400, we get 612.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6120, and continue the process.

Going ahead to step 12:
6120 divided by 684 is 8 with a remainder of 648.
The number 8 becomes the next digit in our result. 
Result so far: 31598.4078
Deduct 5472 from 6120 and we're left with 648.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6480, and continue the process.

Going ahead to step 13:
6480 divided by 684 is 9 with a remainder of 324.
The number 9 becomes the next digit in our result. 
Result so far: 31598.40789
Subtract 6156 from 6480 to get 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Step 14:
684 goes into 3240 4 times with a remainder of 504.
Record the quotient 4 as the next digit in the result. 
Result so far: 31598.407894
Deduct 2736 from 3240 and we're left with 504.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

Going ahead to step 15:
If we divide 5040 by 684, we get 7 and a remainder of 252.
Record the quotient 7 as the next digit in the result. 
Result so far: 31598.4078947
The remainder is 252 after subtracting 4788 from 5040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Step 16:
684 goes into 2520 3 times with a remainder of 468.
Record the quotient 3 as the next digit in the result. 
Result so far: 31598.40789473
Subtract 2052 from 2520 to get 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

After the division, we end up with 31598.40789473 and a remainder of 4.68e-07.