13668143 ÷ 869 
Let's see how many times 869 fits into 13668143.

Step 1:
869 goes into 1 0 times with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 869

Let's proceed to step 2:
13 divided by 869 is 0 with a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 13 leaves us with 13.
Grab the next digit (6) from the dividend, add it to 13, then carry on: 136 / 869

Going ahead to step 3:
136 divided by 869 is 0 with a remainder of 136.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 136 to get 136.
Bring next digit (6) of the dividend behind the 136 and repeat the process: 1366 / 869

Advancing to step 4:
869 goes into 1366 1 times with a remainder of 497.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 869 from 1366 and we're left with 497.
Fetch the next digit (8) from the dividend, attach it to 497 and continue: 4978 / 869

On to step 5:
4978 divided by 869 is 5 with a remainder of 633.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Deduct 4345 from 4978 and we're left with 633.
Grab the next digit (1) from the dividend, add it to 633, then carry on: 6331 / 869

Going ahead to step 6:
When dividing 6331 by 869, we get 7 with a remainder of 248.
The next digit of our result is 7. 
Result so far: 157.0
If we subtract 6083 from 6331, we get 248.
Bring next digit (4) of the dividend behind the 248 and repeat the process: 2484 / 869

On to step 7:
The number 869 fits into 2484 2 times, leaving a remainder of 746.
Record the quotient 2 as the next digit in the result. 
Result so far: 1572.0
Deduct 1738 from 2484 and we're left with 746.
Fetch the next digit (3) from the dividend, attach it to 746 and continue: 7463 / 869

Moving on to step 8:
If we divide 7463 by 869, we get 8 and a remainder of 511.
The next digit of our result is 8. 
Result so far: 15728.0
Deduct 6952 from 7463 and we're left with 511.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5110, and continue the process.

Going ahead to step 9:
The number 869 fits into 5110 5 times, leaving a remainder of 765.
Use 5 as the next digit of our solution. 
Result so far: 15728.5
If we subtract 4345 from 5110, we get 765.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7650, and continue the process.

Step 10:
7650 divided by 869 is 8 with a remainder of 698.
Use 8 as the next digit of our solution. 
Result so far: 15728.58
Subtracting 6952 from 7650 leaves us with 698.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6980, and continue the process.

Advancing to step 11:
6980 divided by 869 is 8 with a remainder of 28.
Record the quotient 8 as the next digit in the result. 
Result so far: 15728.588
If we subtract 6952 from 6980, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

In conclusion, the division gives 15728.588 with a balance of 0.0028.