Let's divide 413955 by 3
The aim is to understand the frequency of 3 in 413955.

Let's proceed to step 1:
If we divide 4 by 3, we get 1 and a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 3 away from 4, we end up with 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 3

Moving on to step 2:
If we divide 11 by 3, we get 3 and a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Deduct 9 from 11 and we're left with 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 3

Let's proceed to step 3:
23 divided by 3 is 7 with a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 137.0
Subtracting 21 from 23 leaves us with 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 3

Step 4:
When dividing 29 by 3, we get 9 with a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 1379.0
Deduct 27 from 29 and we're left with 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 3

Advancing to step 5:
If we divide 25 by 3, we get 8 and a remainder of 1.
The next digit of our result is 8. 
Result so far: 13798.0
Subtracting 24 from 25 leaves us with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 3

Step 6:
The number 3 fits into 15 5 times, leaving a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 137985.0
If we subtract 15 from 15, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 7:
3 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 137985.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
The number 3 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 137985.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 137985.0 with a remaining 0.0.