666873 divided by 51 
Let's see how many times 51 fits into 666873.

Let's proceed to step 1:
The number 51 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 51

Step 2:
If we divide 66 by 51, we get 1 and a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 51 from 66, we get 15.
Bring next digit (6) of the dividend behind the 15 and repeat the process: 156 / 51

Step 3:
When dividing 156 by 51, we get 3 with a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we subtract 153 from 156, we get 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 51

Let's proceed to step 4:
When dividing 38 by 51, we get 0 with a remainder of 38.
Write down 0 as next digit of the result. 
Result so far: 130.0
The remainder is 38 after subtracting 0 from 38.
Include the next digit (7) from the dividend after 38, then repeat: 387 / 51

Step 5:
51 goes into 387 7 times with a remainder of 30.
Write down 7 as next digit of the result. 
Result so far: 1307.0
If we take 357 away from 387, we end up with 30.
Grab the next digit (3) from the dividend, add it to 30, then carry on: 303 / 51

Step 6:
51 goes into 303 5 times with a remainder of 48.
The number 5 becomes the next digit in our result. 
Result so far: 13075.0
Subtracting 255 from 303 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.

On to step 7:
The number 51 fits into 480 9 times, leaving a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 13075.9
If we take 459 away from 480, we end up with 21.
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:
When dividing 210 by 51, we get 4 with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 13075.94
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:
The number 51 fits into 60 1 times, leaving a remainder of 9.
The next digit of our result is 1. 
Result so far: 13075.941
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.

Let's proceed to step 10:
If we divide 90 by 51, we get 1 and a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 13075.9411
Subtract 51 from 90 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

After the division, we end up with 13075.9411 and a remainder of 0.00039.