558513 ÷ 51 
We want to figure out the number of times 558513 can be divided by 51.

Step 1:
51 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 51

On to step 2:
If we divide 55 by 51, we get 1 and a remainder of 4.
The next digit of our result is 1. 
Result so far: 1.0
If we take 51 away from 55, we end up with 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 51

Let's proceed to step 3:
The number 51 fits into 48 0 times, leaving a remainder of 48.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtracting 0 from 48 leaves us with 48.
Include the next digit (5) from the dividend after 48, then repeat: 485 / 51

Let's proceed to step 4:
When dividing 485 by 51, we get 9 with a remainder of 26.
Put 9 as the next digit of the answer. 
Result so far: 109.0
If we take 459 away from 485, we end up with 26.
Grab the next digit (1) from the dividend, add it to 26, then carry on: 261 / 51

Step 5:
261 divided by 51 is 5 with a remainder of 6.
Record the quotient 5 as the next digit in the result. 
Result so far: 1095.0
Deduct 255 from 261 and we're left with 6.
Fetch the next digit (3) from the dividend, attach it to 6 and continue: 63 / 51

Going ahead to step 6:
51 goes into 63 1 times with a remainder of 12.
The next digit of our result is 1. 
Result so far: 10951.0
If we subtract 51 from 63, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 7:
The number 51 fits into 120 2 times, leaving a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 10951.2
If we take 102 away from 120, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 8:
When dividing 180 by 51, we get 3 with a remainder of 27.
Record the quotient 3 as the next digit in the result. 
Result so far: 10951.23
Subtract 153 from 180 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 9:
270 divided by 51 is 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 10951.235
If we subtract 255 from 270, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 10:
51 goes into 150 2 times with a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 10951.2352
If we subtract 102 from 150, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 11:
If we divide 480 by 51, we get 9 and a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 10951.23529
Subtract 459 from 480 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 12:
51 can be fit into 210 4 times, resulting in a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 10951.235294
If we take 204 away from 210, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 13:
If we divide 60 by 51, we get 1 and a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 10951.2352941
If we subtract 51 from 60, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 14:
51 can be fit into 90 1 times, resulting in a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 10951.23529411
The remainder is 39 after subtracting 51 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

The final outcome is 10951.23529411, with a leftover of 3.9e-08.