We look at the division of 697850 by 3 
The aim is to understand the frequency of 3 in 697850.

Advancing to step 1:
The number 3 fits into 6 2 times, leaving a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 6 from 6 leaves us with 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 3

Going ahead to step 2:
The number 3 fits into 9 3 times, leaving a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 23.0
The remainder is 0 after subtracting 9 from 9.
Append the next digit (7) from the dividend to 0 and continue with: 7 / 3

Going ahead to step 3:
If we divide 7 by 3, we get 2 and a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 232.0
Deduct 6 from 7 and we're left with 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 3

Step 4:
When dividing 18 by 3, we get 6 with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 2326.0
If we take 18 away from 18, we end up with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 3

Moving on to step 5:
When dividing 5 by 3, we get 1 with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 23261.0
If we subtract 3 from 5, we get 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 3

On to step 6:
When dividing 20 by 3, we get 6 with a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 232616.0
If we subtract 18 from 20, we 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.

Let's proceed to step 7:
3 can be fit into 20 6 times, resulting in a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 232616.6
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.

Step 8:
The number 3 fits into 20 6 times, leaving a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 232616.66
If we subtract 18 from 20, we 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.

The final result is 232616.66 with a remainder of 0.002.