258523 ÷ 57 
Our goal is to divide 258523 by 57.

On to step 1:
57 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 57

Going ahead to step 2:
57 goes into 25 0 times with a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Take the next digit (8) from the dividend and append it to 25, then repeat: 258 / 57

Advancing to step 3:
The number 57 fits into 258 4 times, leaving a remainder of 30.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtracting 228 from 258 leaves us with 30.
Fetch the next digit (5) from the dividend, attach it to 30 and continue: 305 / 57

Let's proceed to step 4:
57 can be fit into 305 5 times, resulting in a remainder of 20.
Write down 5 as next digit of the result. 
Result so far: 45.0
The remainder is 20 after subtracting 285 from 305.
Bring next digit (2) of the dividend behind the 20 and repeat the process: 202 / 57

Let's proceed to step 5:
If we divide 202 by 57, we get 3 and a remainder of 31.
Put 3 as the next digit of the answer. 
Result so far: 453.0
Subtract 171 from 202 to get 31.
Append the next digit (3) from the dividend to 31 and continue with: 313 / 57

Step 6:
When dividing 313 by 57, we get 5 with a remainder of 28.
Put 5 as the next digit of the answer. 
Result so far: 4535.0
If we take 285 away from 313, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 7:
280 divided by 57 is 4 with a remainder of 52.
Record the quotient 4 as the next digit in the result. 
Result so far: 4535.4
If we take 228 away from 280, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 8:
The number 57 fits into 520 9 times, leaving a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 4535.49
If we subtract 513 from 520, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 9:
57 can be fit into 70 1 times, resulting in a remainder of 13.
The number 1 becomes the next digit in our result. 
Result so far: 4535.491
Subtracting 57 from 70 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 10:
If we divide 130 by 57, we get 2 and a remainder of 16.
Record the quotient 2 as the next digit in the result. 
Result so far: 4535.4912
Deduct 114 from 130 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 11:
57 goes into 160 2 times with a remainder of 46.
Record the quotient 2 as the next digit in the result. 
Result so far: 4535.49122
Deduct 114 from 160 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

The final result is 4535.49122 with a remainder of 4.6e-05.