869189 divided by 51 
Our goal is to divide 869189 by 51.

Step 1:
8 divided by 51 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 51

Going ahead to step 2:
51 goes into 86 1 times with a remainder of 35.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 35 after subtracting 51 from 86.
Grab the next digit (9) from the dividend, add it to 35, then carry on: 359 / 51

On to step 3:
51 can be fit into 359 7 times, resulting in a remainder of 2.
The next digit of our result is 7. 
Result so far: 17.0
Deduct 357 from 359 and we're left with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 51

Advancing to step 4:
51 can be fit into 21 0 times, resulting in a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 170.0
If we take 0 away from 21, we end up with 21.
Take the next digit (8) from the dividend and append it to 21, then repeat: 218 / 51

Advancing to step 5:
218 divided by 51 is 4 with a remainder of 14.
The number 4 becomes the next digit in our result. 
Result so far: 1704.0
Subtract 204 from 218 to get 14.
Include the next digit (9) from the dividend after 14, then repeat: 149 / 51

Let's proceed to step 6:
51 can be fit into 149 2 times, resulting in a remainder of 47.
Put 2 as the next digit of the answer. 
Result so far: 17042.0
The remainder is 47 after subtracting 102 from 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

On to step 7:
51 goes into 470 9 times with a remainder of 11.
The next digit of our result is 9. 
Result so far: 17042.9
Subtracting 459 from 470 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 8:
If we divide 110 by 51, we get 2 and a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 17042.92
Subtracting 102 from 110 leaves us with 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:
51 goes into 80 1 times with a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 17042.921
The remainder is 29 after subtracting 51 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 10:
51 can be fit into 290 5 times, resulting in a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 17042.9215
Subtract 255 from 290 to get 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 goes into 350 6 times with a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 17042.92156
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.

Moving on to step 12:
51 can be fit into 440 8 times, resulting in a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 17042.921568
If we subtract 408 from 440, we get 32.
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:
The number 51 fits into 320 6 times, leaving a remainder of 14.
Put 6 as the next digit of the answer. 
Result so far: 17042.9215686
The remainder is 14 after subtracting 306 from 320.
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:
The number 51 fits into 140 2 times, leaving a remainder of 38.
The number 2 becomes the next digit in our result. 
Result so far: 17042.92156862
If we take 102 away from 140, we end up 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.

The final result is 17042.92156862 with a remainder of 3.8e-08.