We're dividing 599521 by 4 
We want to figure out the number of times 599521 can be divided by 4.

On to step 1:
The number 4 fits into 5 1 times, leaving a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 1 after subtracting 4 from 5.
Grab the next digit (9) from the dividend, add it to 1, then carry on: 19 / 4

Step 2:
4 can be fit into 19 4 times, resulting in a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtract 16 from 19 to get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 4

Advancing to step 3:
4 goes into 39 9 times with a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 149.0
Deduct 36 from 39 and we're left with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 4

Going ahead to step 4:
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: 1498.0
If we take 32 away from 35, we end up with 3.
Take the next digit (2) from the dividend and append it to 3, then repeat: 32 / 4

Moving on to step 5:
When dividing 32 by 4, we get 8 with a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 14988.0
If we subtract 32 from 32, we get 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 4

Step 6:
When dividing 1 by 4, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 149880.0
If we subtract 0 from 1, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 7:
The number 4 fits into 10 2 times, leaving a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 149880.2
Subtracting 8 from 10 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.

Going ahead to step 8:
The number 4 fits into 20 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 149880.25
Subtracting 20 from 20 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.

Let's proceed to step 9:
If we divide 0 by 4, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 149880.25
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.

Step 10:
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: 149880.25
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.

The final outcome is 149880.25, with a leftover of 0.0.