12355849 ÷ 879 
Let's see how many times 879 fits into 12355849.

On to step 1:
If we divide 1 by 879, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 879

Let's proceed to step 2:
When dividing 12 by 879, we get 0 with a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Fetch the next digit (3) from the dividend, attach it to 12 and continue: 123 / 879

Step 3:
The number 879 fits into 123 0 times, leaving a remainder of 123.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 123 leaves us with 123.
Take the next digit (5) from the dividend and append it to 123, then repeat: 1235 / 879

Advancing to step 4:
879 can be fit into 1235 1 times, resulting in a remainder of 356.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 879 from 1235 to get 356.
Append the next digit (5) from the dividend to 356 and continue with: 3565 / 879

Going ahead to step 5:
The number 879 fits into 3565 4 times, leaving a remainder of 49.
Put 4 as the next digit of the answer. 
Result so far: 14.0
The remainder is 49 after subtracting 3516 from 3565.
Grab the next digit (8) from the dividend, add it to 49, then carry on: 498 / 879

Going ahead to step 6:
498 divided by 879 is 0 with a remainder of 498.
Use 0 as the next digit of our solution. 
Result so far: 140.0
The remainder is 498 after subtracting 0 from 498.
Append the next digit (4) from the dividend to 498 and continue with: 4984 / 879

Let's proceed to step 7:
The number 879 fits into 4984 5 times, leaving a remainder of 589.
The next digit of our result is 5. 
Result so far: 1405.0
Subtracting 4395 from 4984 leaves us with 589.
Include the next digit (9) from the dividend after 589, then repeat: 5899 / 879

Step 8:
5899 divided by 879 is 6 with a remainder of 625.
The number 6 becomes the next digit in our result. 
Result so far: 14056.0
If we take 5274 away from 5899, we end up with 625.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6250, and continue the process.

Going ahead to step 9:
879 can be fit into 6250 7 times, resulting in a remainder of 97.
The number 7 becomes the next digit in our result. 
Result so far: 14056.7
Deduct 6153 from 6250 and we're left with 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

On to step 10:
The number 879 fits into 970 1 times, leaving a remainder of 91.
Write down 1 as next digit of the result. 
Result so far: 14056.71
Subtract 879 from 970 to get 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Let's proceed to step 11:
910 divided by 879 is 1 with a remainder of 31.
The next digit of our result is 1. 
Result so far: 14056.711
Subtract 879 from 910 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Our division results in 14056.711 with a remaining 0.0031.