623377 ÷ 3 
The aim is to understand the frequency of 3 in 623377.

Step 1:
The number 3 fits into 6 2 times, leaving a remainder of 0.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 6 from 6 leaves us with 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 3

Advancing to step 2:
2 divided by 3 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 20.0
If we subtract 0 from 2, we get 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 3

Advancing to step 3:
The number 3 fits into 23 7 times, leaving a remainder of 2.
The next digit of our result is 7. 
Result so far: 207.0
The remainder is 2 after subtracting 21 from 23.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 3

Let's proceed to step 4:
The number 3 fits into 23 7 times, leaving a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 2077.0
If we subtract 21 from 23, we get 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 3

Let's proceed to step 5:
27 divided by 3 is 9 with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 20779.0
If we take 27 away from 27, we end up with 0.
Fetch the next digit (7) from the dividend, attach it to 0 and continue: 7 / 3

Going ahead to step 6:
3 can be fit into 7 2 times, resulting in a remainder of 1.
The next digit of our result is 2. 
Result so far: 207792.0
If we take 6 away from 7, 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:
3 can be fit into 10 3 times, resulting in a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 207792.3
Deduct 9 from 10 and we're left 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 8:
10 divided by 3 is 3 with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 207792.33
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 outcome is 207792.33, with a leftover of 0.001.