We look at the division of 850561 by 3 
The aim is to understand the frequency of 3 in 850561.

Step 1:
The number 3 fits into 8 2 times, leaving a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 6 from 8, we get 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 3

Let's proceed to step 2:
If we divide 25 by 3, we get 8 and a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 28.0
Subtract 24 from 25 to get 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 3

Going ahead to step 3:
When dividing 10 by 3, we get 3 with a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 283.0
Subtracting 9 from 10 leaves us with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 3

Going ahead to step 4:
3 goes into 15 5 times with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 2835.0
The remainder is 0 after subtracting 15 from 15.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 3

Going ahead to step 5:
3 goes into 6 2 times with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 28352.0
If we take 6 away from 6, we end up with 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 3

Going ahead to step 6:
When dividing 1 by 3, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 283520.0
Subtract 0 from 1 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.

On to step 7:
The number 3 fits into 10 3 times, leaving a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 283520.3
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.

Going ahead to step 8:
3 can be fit into 10 3 times, resulting in a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 283520.33
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.

In conclusion, the division gives 283520.33 with a balance of 0.001.