We look at the division of 783910 by 4 
The aim is to understand the frequency of 4 in 783910.

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
Deduct 4 from 7 and we're left with 3.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 4

Going ahead to step 2:
The number 4 fits into 38 9 times, leaving a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 19.0
If we subtract 36 from 38, we get 2.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 4

Moving on to step 3:
The number 4 fits into 23 5 times, leaving a remainder of 3.
The number 5 becomes the next digit in our result. 
Result so far: 195.0
The remainder is 3 after subtracting 20 from 23.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 4

Advancing to step 4:
If we divide 39 by 4, we get 9 and a remainder of 3.
The next digit of our result is 9. 
Result so far: 1959.0
If we subtract 36 from 39, we get 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 4

Advancing to step 5:
If we divide 31 by 4, we get 7 and a remainder of 3.
The next digit of our result is 7. 
Result so far: 19597.0
If we subtract 28 from 31, we get 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 4

Let's proceed to step 6:
4 goes into 30 7 times with a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 195977.0
Subtracting 28 from 30 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 7:
When dividing 20 by 4, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 195977.5
Subtract 20 from 20 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.

Let's proceed to step 8:
4 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 195977.5
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.

Going ahead to step 9:
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: 195977.5
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.

Our division results in 195977.5 with a remaining 0.0.