We're dividing 856100 by 3 
The aim is to understand the frequency of 3 in 856100.

Advancing to step 1:
8 divided by 3 is 2 with a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 6 from 8 and we're left with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 3

Advancing to step 2:
25 divided by 3 is 8 with a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 28.0
The remainder is 1 after subtracting 24 from 25.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 3

Going ahead to step 3:
The number 3 fits into 16 5 times, leaving a remainder of 1.
The next digit of our result is 5. 
Result so far: 285.0
Subtract 15 from 16 to get 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 3

Advancing to step 4:
3 can be fit into 11 3 times, resulting in a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 2853.0
If we take 9 away from 11, we end up with 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 3

Let's proceed to step 5:
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: 28536.0
If we take 18 away from 20, we end up with 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 3

Step 6:
If we divide 20 by 3, we get 6 and a remainder of 2.
The next digit of our result is 6. 
Result so far: 285366.0
If we take 18 away from 20, 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.

Let's proceed to step 7:
When dividing 20 by 3, we get 6 with a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 285366.6
Subtracting 18 from 20 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.

Advancing to step 8:
The number 3 fits into 20 6 times, leaving a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 285366.66
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 285366.66, and the remainder is 0.002.