We're dividing 666516 by 51 
Let's see how many times 51 fits into 666516.

On to step 1:
The number 51 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 51

On to step 2:
The number 51 fits into 66 1 times, leaving a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 51 from 66 to get 15.
Take the next digit (6) from the dividend and append it to 15, then repeat: 156 / 51

Let's proceed to step 3:
When dividing 156 by 51, we get 3 with a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtracting 153 from 156 leaves us with 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 51

Advancing to step 4:
51 can be fit into 35 0 times, resulting in a remainder of 35.
The number 0 becomes the next digit in our result. 
Result so far: 130.0
The remainder is 35 after subtracting 0 from 35.
Include the next digit (1) from the dividend after 35, then repeat: 351 / 51

Let's proceed to step 5:
351 divided by 51 is 6 with a remainder of 45.
Record the quotient 6 as the next digit in the result. 
Result so far: 1306.0
Subtracting 306 from 351 leaves us with 45.
Fetch the next digit (6) from the dividend, attach it to 45 and continue: 456 / 51

On to step 6:
51 can be fit into 456 8 times, resulting in a remainder of 48.
Write down 8 as next digit of the result. 
Result so far: 13068.0
Subtracting 408 from 456 leaves us with 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 7:
480 divided by 51 is 9 with a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 13068.9
The remainder is 21 after subtracting 459 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 8:
51 goes into 210 4 times with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 13068.94
Subtract 204 from 210 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 9:
If we divide 60 by 51, we get 1 and a remainder of 9.
The next digit of our result is 1. 
Result so far: 13068.941
The remainder is 9 after subtracting 51 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 10:
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: 13068.9411
Subtracting 51 from 90 leaves us with 39.
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 13068.9411, with a leftover of 0.00039.