We're dividing 850369 by 51 
We want to figure out the number of times 850369 can be divided by 51.

On to step 1:
The number 51 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 51

Step 2:
The number 51 fits into 85 1 times, leaving a remainder of 34.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 51 from 85 leaves us with 34.
Take the next digit (0) from the dividend and append it to 34, then repeat: 340 / 51

On to step 3:
340 divided by 51 is 6 with a remainder of 34.
Write down 6 as next digit of the result. 
Result so far: 16.0
Subtract 306 from 340 to get 34.
Take the next digit (3) from the dividend and append it to 34, then repeat: 343 / 51

Moving on to step 4:
343 divided by 51 is 6 with a remainder of 37.
Use 6 as the next digit of our solution. 
Result so far: 166.0
If we subtract 306 from 343, we get 37.
Append the next digit (6) from the dividend to 37 and continue with: 376 / 51

Moving on to step 5:
376 divided by 51 is 7 with a remainder of 19.
Use 7 as the next digit of our solution. 
Result so far: 1667.0
Subtract 357 from 376 to get 19.
Grab the next digit (9) from the dividend, add it to 19, then carry on: 199 / 51

Moving on to step 6:
When dividing 199 by 51, we get 3 with a remainder of 46.
The next digit of our result is 3. 
Result so far: 16673.0
If we subtract 153 from 199, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 7:
51 goes into 460 9 times with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 16673.9
If we take 459 away from 460, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 8:
51 goes into 10 0 times with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 16673.9
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
51 can be fit into 100 1 times, resulting in a remainder of 49.
Use 1 as the next digit of our solution. 
Result so far: 16673.901
If we take 51 away from 100, we end up with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Advancing to step 10:
51 can be fit into 490 9 times, resulting in a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 16673.9019
Deduct 459 from 490 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 11:
51 can be fit into 310 6 times, resulting in a remainder of 4.
The next digit of our result is 6. 
Result so far: 16673.90196
If we take 306 away from 310, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 12:
If we divide 40 by 51, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 16673.90196
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 13:
The number 51 fits into 400 7 times, leaving a remainder of 43.
Record the quotient 7 as the next digit in the result. 
Result so far: 16673.9019607
The remainder is 43 after subtracting 357 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 14:
The number 51 fits into 430 8 times, leaving a remainder of 22.
The next digit of our result is 8. 
Result so far: 16673.90196078
Deduct 408 from 430 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Our division results in 16673.90196078 with a remaining 2.2e-08.