684724 divided by 3 
The aim is to understand the frequency of 3 in 684724.

On to step 1:
When dividing 6 by 3, we get 2 with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 6 from 6 leaves us with 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 3

Let's proceed to step 2:
The number 3 fits into 8 2 times, leaving a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 22.0
If we take 6 away from 8, we end up with 2.
Grab the next digit (4) from the dividend, add it to 2, then carry on: 24 / 3

Going ahead to step 3:
24 divided by 3 is 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 228.0
Subtract 24 from 24 to get 0.
Fetch the next digit (7) from the dividend, attach it to 0 and continue: 7 / 3

Moving on to step 4:
3 goes into 7 2 times with a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 2282.0
The remainder is 1 after subtracting 6 from 7.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 3

On to step 5:
3 can be fit into 12 4 times, resulting in a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 22824.0
Deduct 12 from 12 and we're left with 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 3

Let's proceed to step 6:
3 can be fit into 4 1 times, resulting in a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 228241.0
If we take 3 away from 4, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 7:
3 can be fit into 10 3 times, resulting in a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 228241.3
Deduct 9 from 10 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 8:
3 goes into 10 3 times with a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 228241.33
If we subtract 9 from 10, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Our division results in 228241.33 with a remaining 0.001.