We're dividing 12235920 by 879 
We want to figure out the number of times 12235920 can be divided by 879.

Going ahead to step 1:
879 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 879

Let's proceed to step 2:
879 can be fit into 12 0 times, resulting in a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Grab the next digit (2) from the dividend, add it to 12, then carry on: 122 / 879

Let's proceed to step 3:
If we divide 122 by 879, we get 0 and a remainder of 122.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 122 after subtracting 0 from 122.
Fetch the next digit (3) from the dividend, attach it to 122 and continue: 1223 / 879

Going ahead to step 4:
879 can be fit into 1223 1 times, resulting in a remainder of 344.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 879 away from 1223, we end up with 344.
Include the next digit (5) from the dividend after 344, then repeat: 3445 / 879

Let's proceed to step 5:
879 goes into 3445 3 times with a remainder of 808.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Subtract 2637 from 3445 to get 808.
Include the next digit (9) from the dividend after 808, then repeat: 8089 / 879

Moving on to step 6:
If we divide 8089 by 879, we get 9 and a remainder of 178.
Record the quotient 9 as the next digit in the result. 
Result so far: 139.0
If we subtract 7911 from 8089, we get 178.
Grab the next digit (2) from the dividend, add it to 178, then carry on: 1782 / 879

Moving on to step 7:
When dividing 1782 by 879, we get 2 with a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 1392.0
Subtracting 1758 from 1782 leaves us with 24.
Grab the next digit (0) from the dividend, add it to 24, then carry on: 240 / 879

Moving on to step 8:
The number 879 fits into 240 0 times, leaving a remainder of 240.
The number 0 becomes the next digit in our result. 
Result so far: 13920.0
Subtract 0 from 240 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 9:
When dividing 2400 by 879, we get 2 with a remainder of 642.
Record the quotient 2 as the next digit in the result. 
Result so far: 13920.2
If we take 1758 away from 2400, we end up with 642.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6420, and continue the process.

Let's proceed to step 10:
6420 divided by 879 is 7 with a remainder of 267.
Record the quotient 7 as the next digit in the result. 
Result so far: 13920.27
The remainder is 267 after subtracting 6153 from 6420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Going ahead to step 11:
If we divide 2670 by 879, we get 3 and a remainder of 33.
Use 3 as the next digit of our solution. 
Result so far: 13920.273
If we take 2637 away from 2670, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Advancing to step 12:
879 goes into 330 0 times with a remainder of 330.
The next digit of our result is 0. 
Result so far: 13920.273
Deduct 0 from 330 and we're left with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Step 13:
If we divide 3300 by 879, we get 3 and a remainder of 663.
The next digit of our result is 3. 
Result so far: 13920.27303
Subtract 2637 from 3300 to get 663.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6630, and continue the process.

Let's proceed to step 14:
879 goes into 6630 7 times with a remainder of 477.
Write down 7 as next digit of the result. 
Result so far: 13920.273037
The remainder is 477 after subtracting 6153 from 6630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4770, and continue the process.

On to step 15:
When dividing 4770 by 879, we get 5 with a remainder of 375.
Use 5 as the next digit of our solution. 
Result so far: 13920.2730375
If we subtract 4395 from 4770, we get 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Going ahead to step 16:
3750 divided by 879 is 4 with a remainder of 234.
Record the quotient 4 as the next digit in the result. 
Result so far: 13920.27303754
Subtracting 3516 from 3750 leaves us with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

After the division, we end up with 13920.27303754 and a remainder of 2.34e-07.