749520 ÷ 3 
The aim is to understand the frequency of 3 in 749520.

Let's proceed to step 1:
7 divided by 3 is 2 with a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 6 away from 7, we end up with 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 3

Going ahead to step 2:
3 can be fit into 14 4 times, resulting in a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 24.0
Subtracting 12 from 14 leaves us with 2.
Grab the next digit (9) from the dividend, add it to 2, then carry on: 29 / 3

Advancing to step 3:
When dividing 29 by 3, we get 9 with a remainder of 2.
The next digit of our result is 9. 
Result so far: 249.0
If we subtract 27 from 29, we get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 3

Step 4:
When dividing 25 by 3, we get 8 with a remainder of 1.
Put 8 as the next digit of the answer. 
Result so far: 2498.0
Subtracting 24 from 25 leaves us with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 3

Moving on to step 5:
The number 3 fits into 12 4 times, leaving a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 24984.0
If we subtract 12 from 12, we get 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 3

Step 6:
3 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 249840.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
When dividing 0 by 3, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 249840.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
0 divided by 3 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 249840.0
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 249840.0 with a balance of 0.0.