523615 divided by 3 
The aim is to understand the frequency of 3 in 523615.

Let's proceed to step 1:
5 divided by 3 is 1 with a remainder of 2.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 3 from 5 leaves us with 2.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 3

Advancing to step 2:
If we divide 22 by 3, we get 7 and a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
The remainder is 1 after subtracting 21 from 22.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 3

Moving on to step 3:
3 goes into 13 4 times with a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 174.0
Subtracting 12 from 13 leaves us with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 3

On to step 4:
The number 3 fits into 16 5 times, leaving a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 1745.0
If we subtract 15 from 16, we get 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 3

Step 5:
The number 3 fits into 11 3 times, leaving a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 17453.0
Subtracting 9 from 11 leaves us with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 3

On to step 6:
3 can be fit into 25 8 times, resulting in a remainder of 1.
Put 8 as the next digit of the answer. 
Result so far: 174538.0
Subtract 24 from 25 to 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.

Going ahead to step 7:
3 goes into 10 3 times with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 174538.3
If we take 9 away from 10, 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.

Going ahead to step 8:
10 divided by 3 is 3 with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 174538.33
Subtract 9 from 10 to 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 174538.33 with a remaining 0.001.