We divide 395741 by 3
The aim is to understand the frequency of 3 in 395741.

Going ahead to step 1:
The number 3 fits into 3 1 times, leaving a remainder of 0.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 3 from 3, we get 0.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 3

On to step 2:
9 divided by 3 is 3 with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Deduct 9 from 9 and we're left with 0.
Include the next digit (5) from the dividend after 0, then repeat: 5 / 3

Let's proceed to step 3:
3 can be fit into 5 1 times, resulting in a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 131.0
If we take 3 away from 5, we end up with 2.
Take the next digit (7) from the dividend and append it to 2, then repeat: 27 / 3

Let's proceed to step 4:
3 can be fit into 27 9 times, resulting in a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 1319.0
Deduct 27 from 27 and we're left with 0.
Take the next digit (4) from the dividend and append it to 0, then repeat: 4 / 3

On to step 5:
4 divided by 3 is 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 13191.0
If we take 3 away from 4, we end up with 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 3

Advancing to step 6:
The number 3 fits into 11 3 times, leaving a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 131913.0
If we take 9 away from 11, we end up 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 7:
20 divided by 3 is 6 with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 131913.6
The remainder is 2 after subtracting 18 from 20.
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 8:
The number 3 fits into 20 6 times, leaving a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 131913.66
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.

The quotient of the division is 131913.66, and the remainder is 0.002.