We look at the division of 20127923 by 870 
Let's see how many times 870 fits into 20127923.

Step 1:
The number 870 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 870

On to step 2:
870 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Take the next digit (1) from the dividend and append it to 20, then repeat: 201 / 870

Let's proceed to step 3:
870 goes into 201 0 times with a remainder of 201.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 201 leaves us with 201.
Fetch the next digit (2) from the dividend, attach it to 201 and continue: 2012 / 870

On to step 4:
If we divide 2012 by 870, we get 2 and a remainder of 272.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 1740 from 2012 and we're left with 272.
Include the next digit (7) from the dividend after 272, then repeat: 2727 / 870

Step 5:
870 goes into 2727 3 times with a remainder of 117.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
Subtract 2610 from 2727 to get 117.
Grab the next digit (9) from the dividend, add it to 117, then carry on: 1179 / 870

Advancing to step 6:
1179 divided by 870 is 1 with a remainder of 309.
Put 1 as the next digit of the answer. 
Result so far: 231.0
Subtracting 870 from 1179 leaves us with 309.
Grab the next digit (2) from the dividend, add it to 309, then carry on: 3092 / 870

On to step 7:
3092 divided by 870 is 3 with a remainder of 482.
The number 3 becomes the next digit in our result. 
Result so far: 2313.0
If we take 2610 away from 3092, we end up with 482.
Take the next digit (3) from the dividend and append it to 482, then repeat: 4823 / 870

Going ahead to step 8:
870 goes into 4823 5 times with a remainder of 473.
Put 5 as the next digit of the answer. 
Result so far: 23135.0
If we take 4350 away from 4823, we end up with 473.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4730, and continue the process.

Let's proceed to step 9:
If we divide 4730 by 870, we get 5 and a remainder of 380.
The number 5 becomes the next digit in our result. 
Result so far: 23135.5
Subtracting 4350 from 4730 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Going ahead to step 10:
The number 870 fits into 3800 4 times, leaving a remainder of 320.
Write down 4 as next digit of the result. 
Result so far: 23135.54
Subtract 3480 from 3800 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 11:
When dividing 3200 by 870, we get 3 with a remainder of 590.
Record the quotient 3 as the next digit in the result. 
Result so far: 23135.543
If we take 2610 away from 3200, we end up with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Step 12:
When dividing 5900 by 870, we get 6 with a remainder of 680.
Record the quotient 6 as the next digit in the result. 
Result so far: 23135.5436
Deduct 5220 from 5900 and we're left with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Going ahead to step 13:
If we divide 6800 by 870, we get 7 and a remainder of 710.
The number 7 becomes the next digit in our result. 
Result so far: 23135.54367
If we subtract 6090 from 6800, we get 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7100, and continue the process.

On to step 14:
870 can be fit into 7100 8 times, resulting in a remainder of 140.
Use 8 as the next digit of our solution. 
Result so far: 23135.543678
The remainder is 140 after subtracting 6960 from 7100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Advancing to step 15:
If we divide 1400 by 870, we get 1 and a remainder of 530.
Record the quotient 1 as the next digit in the result. 
Result so far: 23135.5436781
Subtracting 870 from 1400 leaves us with 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Moving on to step 16:
870 can be fit into 5300 6 times, resulting in a remainder of 80.
The number 6 becomes the next digit in our result. 
Result so far: 23135.54367816
If we subtract 5220 from 5300, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Our division results in 23135.54367816 with a remaining 8e-08.