Let's divide 12120825 by 13
Our goal is to divide 12120825 by 13.

Advancing to step 1:
If we divide 1 by 13, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 13

Advancing to step 2:
When dividing 12 by 13, we get 0 with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Take the next digit (1) from the dividend and append it to 12, then repeat: 121 / 13

On to step 3:
13 can be fit into 121 9 times, resulting in a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 9.0
The remainder is 4 after subtracting 117 from 121.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 13

Let's proceed to step 4:
When dividing 42 by 13, we get 3 with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 93.0
Deduct 39 from 42 and we're left with 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 13

Step 5:
If we divide 30 by 13, we get 2 and a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 932.0
Subtract 26 from 30 to get 4.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 13

On to step 6:
If we divide 48 by 13, we get 3 and a remainder of 9.
Record the quotient 3 as the next digit in the result. 
Result so far: 9323.0
If we subtract 39 from 48, we get 9.
Grab the next digit (2) from the dividend, add it to 9, then carry on: 92 / 13

Going ahead to step 7:
If we divide 92 by 13, we get 7 and a remainder of 1.
The next digit of our result is 7. 
Result so far: 93237.0
Subtracting 91 from 92 leaves us with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 13

Let's proceed to step 8:
When dividing 15 by 13, we get 1 with a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 932371.0
If we take 13 away from 15, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 9:
If we divide 20 by 13, we get 1 and a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 932371.1
Deduct 13 from 20 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 10:
13 can be fit into 70 5 times, resulting in a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 932371.15
Subtract 65 from 70 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 11:
13 can be fit into 50 3 times, resulting in a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 932371.153
Deduct 39 from 50 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 12:
13 goes into 110 8 times with a remainder of 6.
The next digit of our result is 8. 
Result so far: 932371.1538
If we subtract 104 from 110, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 13:
13 goes into 60 4 times with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 932371.15384
The remainder is 8 after subtracting 52 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 14:
The number 13 fits into 80 6 times, leaving a remainder of 2.
The next digit of our result is 6. 
Result so far: 932371.153846
The remainder is 2 after subtracting 78 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 15:
13 goes into 20 1 times with a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 932371.1538461
Subtract 13 from 20 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 16:
The number 13 fits into 70 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 932371.15384615
Deduct 65 from 70 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Our division results in 932371.15384615 with a remaining 5e-09.