Let's divide 851594 by 51
We want to figure out the number of times 851594 can be divided by 51.

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
Deduct 0 from 8 and we're left with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 51

Advancing to step 2:
85 divided by 51 is 1 with a remainder of 34.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 51 from 85 leaves us with 34.
Include the next digit (1) from the dividend after 34, then repeat: 341 / 51

Advancing to step 3:
The number 51 fits into 341 6 times, leaving a remainder of 35.
Use 6 as the next digit of our solution. 
Result so far: 16.0
Deduct 306 from 341 and we're left with 35.
Fetch the next digit (5) from the dividend, attach it to 35 and continue: 355 / 51

Advancing to step 4:
If we divide 355 by 51, we get 6 and a remainder of 49.
The number 6 becomes the next digit in our result. 
Result so far: 166.0
Subtracting 306 from 355 leaves us with 49.
Grab the next digit (9) from the dividend, add it to 49, then carry on: 499 / 51

Step 5:
If we divide 499 by 51, we get 9 and a remainder of 40.
Use 9 as the next digit of our solution. 
Result so far: 1669.0
Subtracting 459 from 499 leaves us with 40.
Include the next digit (4) from the dividend after 40, then repeat: 404 / 51

Step 6:
When dividing 404 by 51, we get 7 with a remainder of 47.
Put 7 as the next digit of the answer. 
Result so far: 16697.0
The remainder is 47 after subtracting 357 from 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 7:
If we divide 470 by 51, we get 9 and a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 16697.9
Subtract 459 from 470 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 8:
51 goes into 110 2 times with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 16697.92
If we subtract 102 from 110, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
If we divide 80 by 51, we get 1 and a remainder of 29.
The next digit of our result is 1. 
Result so far: 16697.921
If we subtract 51 from 80, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 10:
If we divide 290 by 51, we get 5 and a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 16697.9215
Subtracting 255 from 290 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 11:
51 can be fit into 350 6 times, resulting in a remainder of 44.
Use 6 as the next digit of our solution. 
Result so far: 16697.92156
If we subtract 306 from 350, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 12:
The number 51 fits into 440 8 times, leaving a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 16697.921568
The remainder is 32 after subtracting 408 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 13:
If we divide 320 by 51, we get 6 and a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 16697.9215686
If we subtract 306 from 320, we get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 14:
51 can be fit into 140 2 times, resulting in a remainder of 38.
The next digit of our result is 2. 
Result so far: 16697.92156862
Subtracting 102 from 140 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

In conclusion, the division gives 16697.92156862 with a balance of 3.8e-08.