We look at the division of 757812 by 4 
The aim is to understand the frequency of 4 in 757812.

On to step 1:
4 goes into 7 1 times with a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 3 after subtracting 4 from 7.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 4

Let's proceed to step 2:
The number 4 fits into 35 8 times, leaving a remainder of 3.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
The remainder is 3 after subtracting 32 from 35.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 4

On to step 3:
4 can be fit into 37 9 times, resulting in a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 189.0
Subtract 36 from 37 to get 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 4

Moving on to step 4:
18 divided by 4 is 4 with a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 1894.0
If we subtract 16 from 18, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 4

Step 5:
If we divide 21 by 4, we get 5 and a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 18945.0
The remainder is 1 after subtracting 20 from 21.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 4

Advancing to step 6:
When dividing 12 by 4, we get 3 with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 189453.0
Subtract 12 from 12 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.

On to step 7:
0 divided by 4 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 189453.0
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.

Advancing to step 8:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 189453.0
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.

The final result is 189453.0 with a remainder of 0.0.