684365 ÷ 12 
The aim is to understand the frequency of 12 in 684365.

Step 1:
12 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 12

Moving on to step 2:
12 goes into 68 5 times with a remainder of 8.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtracting 60 from 68 leaves us with 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 12

On to step 3:
When dividing 84 by 12, we get 7 with a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 57.0
Subtracting 84 from 84 leaves us with 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 12

On to step 4:
3 divided by 12 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 570.0
Subtract 0 from 3 to get 3.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 12

Step 5:
If we divide 36 by 12, we get 3 and a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 5703.0
If we take 36 away from 36, we end up with 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 12

Advancing to step 6:
12 can be fit into 5 0 times, resulting in a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 57030.0
Deduct 0 from 5 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 7:
The number 12 fits into 50 4 times, leaving a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 57030.4
If we subtract 48 from 50, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 8:
When dividing 20 by 12, we get 1 with a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 57030.41
Deduct 12 from 20 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.

Moving on to step 9:
The number 12 fits into 80 6 times, leaving a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 57030.416
Deduct 72 from 80 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.

On to step 10:
If we divide 80 by 12, we get 6 and a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 57030.4166
If we subtract 72 from 80, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 57030.4166 and a remainder of 8e-05.