We're dividing 12434180 by 869 
We want to divide 12434180 by 869.

On to step 1:
869 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 869

On to step 2:
869 goes into 12 0 times with a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Include the next digit (4) from the dividend after 12, then repeat: 124 / 869

Step 3:
If we divide 124 by 869, we get 0 and a remainder of 124.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 124 to get 124.
Include the next digit (3) from the dividend after 124, then repeat: 1243 / 869

Going ahead to step 4:
When dividing 1243 by 869, we get 1 with a remainder of 374.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 869 away from 1243, we end up with 374.
Append the next digit (4) from the dividend to 374 and continue with: 3744 / 869

Step 5:
869 can be fit into 3744 4 times, resulting in a remainder of 268.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
The remainder is 268 after subtracting 3476 from 3744.
Grab the next digit (1) from the dividend, add it to 268, then carry on: 2681 / 869

Advancing to step 6:
If we divide 2681 by 869, we get 3 and a remainder of 74.
Use 3 as the next digit of our solution. 
Result so far: 143.0
If we subtract 2607 from 2681, we get 74.
Grab the next digit (8) from the dividend, add it to 74, then carry on: 748 / 869

Going ahead to step 7:
When dividing 748 by 869, we get 0 with a remainder of 748.
Record the quotient 0 as the next digit in the result. 
Result so far: 1430.0
The remainder is 748 after subtracting 0 from 748.
Fetch the next digit (0) from the dividend, attach it to 748 and continue: 7480 / 869

Step 8:
The number 869 fits into 7480 8 times, leaving a remainder of 528.
Put 8 as the next digit of the answer. 
Result so far: 14308.0
Deduct 6952 from 7480 and we're left with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

Going ahead to step 9:
5280 divided by 869 is 6 with a remainder of 66.
The number 6 becomes the next digit in our result. 
Result so far: 14308.6
Subtract 5214 from 5280 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 10:
When dividing 660 by 869, we get 0 with a remainder of 660.
Write down 0 as next digit of the result. 
Result so far: 14308.6
Deduct 0 from 660 and we're left with 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Step 11:
869 can be fit into 6600 7 times, resulting in a remainder of 517.
Record the quotient 7 as the next digit in the result. 
Result so far: 14308.607
If we subtract 6083 from 6600, we get 517.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5170, and continue the process.

Advancing to step 12:
When dividing 5170 by 869, we get 5 with a remainder of 825.
The next digit of our result is 5. 
Result so far: 14308.6075
If we take 4345 away from 5170, we end up with 825.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8250, and continue the process.

Step 13:
869 goes into 8250 9 times with a remainder of 429.
Record the quotient 9 as the next digit in the result. 
Result so far: 14308.60759
Deduct 7821 from 8250 and we're left with 429.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4290, and continue the process.

Step 14:
If we divide 4290 by 869, we get 4 and a remainder of 814.
Write down 4 as next digit of the result. 
Result so far: 14308.607594
Subtracting 3476 from 4290 leaves us with 814.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8140, and continue the process.

Moving on to step 15:
8140 divided by 869 is 9 with a remainder of 319.
The number 9 becomes the next digit in our result. 
Result so far: 14308.6075949
Subtracting 7821 from 8140 leaves us with 319.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

Let's proceed to step 16:
869 goes into 3190 3 times with a remainder of 583.
Put 3 as the next digit of the answer. 
Result so far: 14308.60759493
Subtract 2607 from 3190 to get 583.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5830, and continue the process.

Our division results in 14308.60759493 with a remaining 5.83e-07.