We look at the division of 763920 by 3 
The aim is to understand the frequency of 3 in 763920.

Let's proceed to step 1:
When dividing 7 by 3, we get 2 with a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 6 from 7, we get 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 3

Moving on to step 2:
If we divide 16 by 3, we get 5 and a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 25.0
Subtracting 15 from 16 leaves us with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 3

Let's proceed to step 3:
When dividing 13 by 3, we get 4 with a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 254.0
If we take 12 away from 13, we end up with 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 3

Moving on to step 4:
If we divide 19 by 3, we get 6 and a remainder of 1.
Record the quotient 6 as the next digit in the result. 
Result so far: 2546.0
The remainder is 1 after subtracting 18 from 19.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 3

On to step 5:
3 goes into 12 4 times with a remainder of 0.
The next digit of our result is 4. 
Result so far: 25464.0
If we subtract 12 from 12, we get 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 3

On to step 6:
0 divided by 3 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 254640.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 7:
When dividing 0 by 3, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 254640.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
If we divide 0 by 3, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 254640.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 254640.0 with a balance of 0.0.