Let's divide 61337 by 3
The aim is to understand the frequency of 3 in 61337.

On to step 1:
3 goes into 6 2 times with a remainder of 0.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 6 from 6, we get 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 3

Advancing to step 2:
1 divided by 3 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 20.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 3

Advancing to step 3:
If we divide 13 by 3, we get 4 and a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 204.0
The remainder is 1 after subtracting 12 from 13.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 3

Let's proceed to step 4:
The number 3 fits into 13 4 times, leaving a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 2044.0
Deduct 12 from 13 and we're left with 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 3

Advancing to step 5:
If we divide 17 by 3, we get 5 and a remainder of 2.
Put 5 as the next digit of the answer. 
Result so far: 20445.0
Subtracting 15 from 17 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 6:
3 can be fit into 20 6 times, resulting in a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 20445.6
Subtract 18 from 20 to 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.

On to step 7:
3 can be fit into 20 6 times, resulting in a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 20445.66
Deduct 18 from 20 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

After the division, we end up with 20445.66 and a remainder of 0.002.