915791 ÷ 4 
We want to figure out the number of times 915791 can be divided by 4.

Advancing to step 1:
9 divided by 4 is 2 with a remainder of 1.
The next digit of our result is 2. 
Result so far: 2.0
If we take 8 away from 9, we end up with 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 4

Step 2:
If we divide 11 by 4, we get 2 and a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 22.0
If we take 8 away from 11, we end up with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 4

Moving on to step 3:
When dividing 35 by 4, we get 8 with a remainder of 3.
The next digit of our result is 8. 
Result so far: 228.0
If we subtract 32 from 35, we get 3.
Bring next digit (7) of the dividend behind the 3 and repeat the process: 37 / 4

On to step 4:
The number 4 fits into 37 9 times, leaving a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 2289.0
The remainder is 1 after subtracting 36 from 37.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 4

On to step 5:
19 divided by 4 is 4 with a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 22894.0
Subtract 16 from 19 to get 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 4

Going ahead to step 6:
When dividing 31 by 4, we get 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 228947.0
If we take 28 away from 31, we end up 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.

Going ahead to step 7:
The number 4 fits into 30 7 times, leaving a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 228947.7
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.

Advancing to step 8:
When dividing 20 by 4, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 228947.75
If we take 20 away from 20, 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.

Advancing to step 9:
0 divided by 4 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 228947.75
The remainder is 0 after subtracting 0 from 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:
If we divide 0 by 4, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 228947.75
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.

Our division results in 228947.75 with a remaining 0.0.