13879772 divided by 870 
We're looking to find how many times 870 goes into 13879772.

Let's proceed to step 1:
The number 870 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 870

Step 2:
If we divide 13 by 870, we get 0 and a remainder of 13.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Append the next digit (8) from the dividend to 13 and continue with: 138 / 870

On to step 3:
138 divided by 870 is 0 with a remainder of 138.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 138 and we're left with 138.
Append the next digit (7) from the dividend to 138 and continue with: 1387 / 870

Step 4:
1387 divided by 870 is 1 with a remainder of 517.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 870 from 1387, we get 517.
Take the next digit (9) from the dividend and append it to 517, then repeat: 5179 / 870

Advancing to step 5:
870 can be fit into 5179 5 times, resulting in a remainder of 829.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
Subtracting 4350 from 5179 leaves us with 829.
Bring next digit (7) of the dividend behind the 829 and repeat the process: 8297 / 870

Step 6:
870 goes into 8297 9 times with a remainder of 467.
Write down 9 as next digit of the result. 
Result so far: 159.0
If we subtract 7830 from 8297, we get 467.
Fetch the next digit (7) from the dividend, attach it to 467 and continue: 4677 / 870

Let's proceed to step 7:
870 can be fit into 4677 5 times, resulting in a remainder of 327.
Write down 5 as next digit of the result. 
Result so far: 1595.0
Deduct 4350 from 4677 and we're left with 327.
Fetch the next digit (2) from the dividend, attach it to 327 and continue: 3272 / 870

Step 8:
When dividing 3272 by 870, we get 3 with a remainder of 662.
Use 3 as the next digit of our solution. 
Result so far: 15953.0
Deduct 2610 from 3272 and we're left with 662.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6620, and continue the process.

On to step 9:
If we divide 6620 by 870, we get 7 and a remainder of 530.
Record the quotient 7 as the next digit in the result. 
Result so far: 15953.7
Deduct 6090 from 6620 and we're left 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.

Going ahead to step 10:
The number 870 fits into 5300 6 times, leaving a remainder of 80.
The number 6 becomes the next digit in our result. 
Result so far: 15953.76
If we take 5220 away from 5300, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 11:
If we divide 800 by 870, we get 0 and a remainder of 800.
Write down 0 as next digit of the result. 
Result so far: 15953.76
Subtract 0 from 800 to get 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

Moving on to step 12:
8000 divided by 870 is 9 with a remainder of 170.
The number 9 becomes the next digit in our result. 
Result so far: 15953.7609
If we subtract 7830 from 8000, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Advancing to step 13:
The number 870 fits into 1700 1 times, leaving a remainder of 830.
The number 1 becomes the next digit in our result. 
Result so far: 15953.76091
Subtracting 870 from 1700 leaves us with 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8300, and continue the process.

Advancing to step 14:
870 goes into 8300 9 times with a remainder of 470.
Write down 9 as next digit of the result. 
Result so far: 15953.760919
Subtract 7830 from 8300 to get 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Step 15:
4700 divided by 870 is 5 with a remainder of 350.
The number 5 becomes the next digit in our result. 
Result so far: 15953.7609195
Deduct 4350 from 4700 and we're left with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Going ahead to step 16:
870 can be fit into 3500 4 times, resulting in a remainder of 20.
The next digit of our result is 4. 
Result so far: 15953.76091954
If we subtract 3480 from 3500, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

In conclusion, the division gives 15953.76091954 with a balance of 2e-08.