691651 ÷ 3 
The aim is to understand the frequency of 3 in 691651.

Let's proceed to step 1:
If we divide 6 by 3, we get 2 and a remainder of 0.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 6 from 6 and we're left with 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 3

Advancing to step 2:
3 can be fit into 9 3 times, resulting in a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
Subtract 9 from 9 to get 0.
Take the next digit (1) from the dividend and append it to 0, then repeat: 1 / 3

Let's proceed to step 3:
1 divided by 3 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 230.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 3

Moving on to step 4:
3 can be fit into 16 5 times, resulting in a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 2305.0
If we take 15 away from 16, we end up with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 3

Step 5:
3 can be fit into 15 5 times, resulting in a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 23055.0
If we take 15 away from 15, we end up with 0.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 3

Going ahead to step 6:
The number 3 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 230550.0
If we take 0 away from 1, 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.

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: 230550.3
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.

On to step 8:
When dividing 10 by 3, we get 3 with a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 230550.33
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 230550.33 with a balance of 0.001.