578507 ÷ 4 
The aim is to understand the frequency of 4 in 578507.

Step 1:
4 goes into 5 1 times with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 1 after subtracting 4 from 5.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 4

Let's proceed to step 2:
The number 4 fits into 17 4 times, leaving a remainder of 1.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Deduct 16 from 17 and we're left with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 4

Advancing to step 3:
If we divide 18 by 4, we get 4 and a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 144.0
Deduct 16 from 18 and we're left with 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 4

Going ahead to step 4:
When dividing 25 by 4, we get 6 with a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 1446.0
If we subtract 24 from 25, we get 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 4

On to step 5:
When dividing 10 by 4, we get 2 with a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 14462.0
The remainder is 2 after subtracting 8 from 10.
Append the next digit (7) from the dividend to 2 and continue with: 27 / 4

Advancing to step 6:
If we divide 27 by 4, we get 6 and a remainder of 3.
The number 6 becomes the next digit in our result. 
Result so far: 144626.0
Deduct 24 from 27 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 7:
The number 4 fits into 30 7 times, leaving a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 144626.7
If we subtract 28 from 30, 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.

Let's proceed to step 8:
4 can be fit into 20 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 144626.75
If we subtract 20 from 20, we 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.

Let's proceed to step 9:
If we divide 0 by 4, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 144626.75
If we subtract 0 from 0, we 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.

Let's proceed to step 10:
0 divided by 4 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 144626.75
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.

After the division, we end up with 144626.75 and a remainder of 0.0.