978463 ÷ 3 
The aim is to understand the frequency of 3 in 978463.

On to step 1:
When dividing 9 by 3, we get 3 with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 9 from 9, we get 0.
Fetch the next digit (7) from the dividend, attach it to 0 and continue: 7 / 3

Let's proceed to step 2:
When dividing 7 by 3, we get 2 with a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 32.0
The remainder is 1 after subtracting 6 from 7.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 3

Going ahead to step 3:
3 goes into 18 6 times with a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 326.0
Subtracting 18 from 18 leaves us with 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 3

Advancing to step 4:
4 divided by 3 is 1 with a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 3261.0
The remainder is 1 after subtracting 3 from 4.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 3

Step 5:
16 divided by 3 is 5 with a remainder of 1.
The next digit of our result is 5. 
Result so far: 32615.0
Deduct 15 from 16 and we're left with 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 3

Going ahead to step 6:
The number 3 fits into 13 4 times, leaving a remainder of 1.
The next digit of our result is 4. 
Result so far: 326154.0
If we subtract 12 from 13, we 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.

Step 7:
3 goes into 10 3 times with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 326154.3
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.

Advancing to step 8:
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: 326154.33
If we subtract 9 from 10, we 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.

After the division, we end up with 326154.33 and a remainder of 0.001.