We divide 3629530 by 3
The aim is to understand the frequency of 3 in 3629530.

Advancing to step 1:
When dividing 3 by 3, we get 1 with a remainder of 0.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 0 after subtracting 3 from 3.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 3

Advancing to step 2:
When dividing 6 by 3, we get 2 with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
The remainder is 0 after subtracting 6 from 6.
Take the next digit (2) from the dividend and append it to 0, then repeat: 2 / 3

On to step 3:
If we divide 2 by 3, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 120.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 3

Step 4:
If we divide 29 by 3, we get 9 and a remainder of 2.
The next digit of our result is 9. 
Result so far: 1209.0
If we take 27 away from 29, we end up with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 3

Let's proceed to step 5:
25 divided by 3 is 8 with a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 12098.0
Deduct 24 from 25 and we're left with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 3

Going ahead to step 6:
3 goes into 13 4 times with a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 120984.0
If we subtract 12 from 13, we get 1.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 3

Let's proceed to step 7:
3 goes into 10 3 times with a remainder of 1.
The next digit of our result is 3. 
Result so far: 1209843.0
Subtracting 9 from 10 leaves us 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.

Let's proceed to step 8:
10 divided by 3 is 3 with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 1209843.3
The remainder is 1 after subtracting 9 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 9:
When dividing 10 by 3, we get 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 1209843.33
The remainder is 1 after subtracting 9 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

After the division, we end up with 1209843.33 and a remainder of 0.001.