We divide 591508 by 4
We want to figure out the number of times 591508 can be divided by 4.

On to step 1:
If we divide 5 by 4, we get 1 and a remainder of 1.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 4 from 5, we get 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 4

Advancing to step 2:
19 divided by 4 is 4 with a remainder of 3.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
Deduct 16 from 19 and we're left with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 4

Moving on to step 3:
When dividing 31 by 4, we get 7 with a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 147.0
The remainder is 3 after subtracting 28 from 31.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 4

On to step 4:
If we divide 35 by 4, we get 8 and a remainder of 3.
The next digit of our result is 8. 
Result so far: 1478.0
If we take 32 away from 35, we end up with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 4

Going ahead to step 5:
4 goes into 30 7 times with a remainder of 2.
The number 7 becomes the next digit in our result. 
Result so far: 14787.0
Deduct 28 from 30 and we're left with 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 4

Let's proceed to step 6:
4 can be fit into 28 7 times, resulting in a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 147877.0
The remainder is 0 after subtracting 28 from 28.
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 7:
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: 147877.0
If we take 0 away from 0, 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 8:
4 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 147877.0
If we take 0 away from 0, 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.

After the division, we end up with 147877.0 and a remainder of 0.0.