Let's divide 851205 by 51
We want to figure out the number of times 851205 can be divided by 51.

Moving on to step 1:
51 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 51

Moving on to step 2:
The number 51 fits into 85 1 times, leaving a remainder of 34.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 51 from 85 to get 34.
Grab the next digit (1) from the dividend, add it to 34, then carry on: 341 / 51

Step 3:
51 goes into 341 6 times with a remainder of 35.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
If we take 306 away from 341, we end up with 35.
Include the next digit (2) from the dividend after 35, then repeat: 352 / 51

Going ahead to step 4:
When dividing 352 by 51, we get 6 with a remainder of 46.
Write down 6 as next digit of the result. 
Result so far: 166.0
If we subtract 306 from 352, we get 46.
Include the next digit (0) from the dividend after 46, then repeat: 460 / 51

Step 5:
When dividing 460 by 51, we get 9 with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 1669.0
Subtract 459 from 460 to get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 51

Moving on to step 6:
51 goes into 15 0 times with a remainder of 15.
The next digit of our result is 0. 
Result so far: 16690.0
Subtracting 0 from 15 leaves us with 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 7:
51 can be fit into 150 2 times, resulting in a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 16690.2
The remainder is 48 after subtracting 102 from 150.
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 8:
480 divided by 51 is 9 with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 16690.29
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.

Advancing to step 9:
If we divide 210 by 51, we get 4 and a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 16690.294
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.

Let's proceed to step 10:
51 goes into 60 1 times with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 16690.2941
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 11:
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: 16690.29411
If we take 51 away from 90, we end up 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 result is 16690.29411 with a remainder of 3.9e-05.