We divide 863692 by 3
The aim is to understand the frequency of 3 in 863692.

Let's proceed to step 1:
3 can be fit into 8 2 times, resulting in a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 6 from 8 to get 2.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 3

Advancing to step 2:
3 can be fit into 26 8 times, resulting in a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 28.0
If we take 24 away from 26, we end up with 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 3

Step 3:
3 can be fit into 23 7 times, resulting in a remainder of 2.
The next digit of our result is 7. 
Result so far: 287.0
Subtract 21 from 23 to get 2.
Append the next digit (6) from the dividend to 2 and continue with: 26 / 3

On to step 4:
3 goes into 26 8 times with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 2878.0
Subtract 24 from 26 to get 2.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 3

Let's proceed to step 5:
3 can be fit into 29 9 times, resulting in a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 28789.0
If we take 27 away from 29, we end up with 2.
Append the next digit (2) from the dividend to 2 and continue with: 22 / 3

Advancing to step 6:
3 can be fit into 22 7 times, resulting in a remainder of 1.
The next digit of our result is 7. 
Result so far: 287897.0
If we take 21 away from 22, 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.

Going ahead to step 7:
10 divided by 3 is 3 with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 287897.3
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.

Let's proceed to step 8:
10 divided by 3 is 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 287897.33
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.

The final result is 287897.33 with a remainder of 0.001.