We're dividing 629774 by 3 
The aim is to understand the frequency of 3 in 629774.

Going ahead to step 1:
When dividing 6 by 3, we get 2 with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 6 from 6 and we're left with 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 3

Moving on to step 2:
The number 3 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 20.0
If we take 0 away from 2, we end up with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 3

Let's proceed to step 3:
29 divided by 3 is 9 with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 209.0
If we take 27 away from 29, we end up with 2.
Include the next digit (7) from the dividend after 2, then repeat: 27 / 3

Advancing to step 4:
3 goes into 27 9 times with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 2099.0
If we subtract 27 from 27, we get 0.
Fetch the next digit (7) from the dividend, attach it to 0 and continue: 7 / 3

Advancing to step 5:
7 divided by 3 is 2 with a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 20992.0
Deduct 6 from 7 and we're left with 1.
Include the next digit (4) from the dividend after 1, then repeat: 14 / 3

Advancing to step 6:
3 goes into 14 4 times with a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 209924.0
If we subtract 12 from 14, 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.

On to step 7:
3 can be fit into 20 6 times, resulting in a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 209924.6
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.

Going ahead to step 8:
3 can be fit into 20 6 times, resulting in a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 209924.66
The remainder is 2 after subtracting 18 from 20.
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 outcome is 209924.66, with a leftover of 0.002.