We look at the division of 120421 by 11 
Let's see how many times 11 fits into 120421.

Moving on to step 1:
If we divide 1 by 11, 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.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 11

Step 2:
If we divide 12 by 11, we get 1 and a remainder of 1.
The next digit of our result is 1. 
Result so far: 1.0
If we take 11 away from 12, we end up with 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 11

Advancing to step 3:
10 divided by 11 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we subtract 0 from 10, we get 10.
Bring next digit (4) of the dividend behind the 10 and repeat the process: 104 / 11

Going ahead to step 4:
104 divided by 11 is 9 with a remainder of 5.
Write down 9 as next digit of the result. 
Result so far: 109.0
Subtracting 99 from 104 leaves us with 5.
Fetch the next digit (2) from the dividend, attach it to 5 and continue: 52 / 11

On to step 5:
11 goes into 52 4 times with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 1094.0
Deduct 44 from 52 and we're left with 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 11

Moving on to step 6:
11 goes into 81 7 times with a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 10947.0
The remainder is 4 after subtracting 77 from 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 7:
If we divide 40 by 11, we get 3 and a remainder of 7.
The next digit of our result is 3. 
Result so far: 10947.3
If we subtract 33 from 40, we 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.

Let's proceed to step 8:
When dividing 70 by 11, we get 6 with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 10947.36
The remainder is 4 after subtracting 66 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
11 can be fit into 40 3 times, resulting in a remainder of 7.
Write down 3 as next digit of the result. 
Result so far: 10947.363
Subtracting 33 from 40 leaves us 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.

Moving on to step 10:
If we divide 70 by 11, we get 6 and a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 10947.3636
Subtracting 66 from 70 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 11:
11 goes into 40 3 times with a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 10947.36363
If we take 33 away from 40, we end up 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 12:
The number 11 fits into 70 6 times, leaving a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 10947.363636
The remainder is 4 after subtracting 66 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 13:
If we divide 40 by 11, we get 3 and a remainder of 7.
The number 3 becomes the next digit in our result. 
Result so far: 10947.3636363
If we subtract 33 from 40, we 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.

Going ahead to step 14:
The number 11 fits into 70 6 times, leaving a remainder of 4.
The next digit of our result is 6. 
Result so far: 10947.36363636
Subtracting 66 from 70 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The quotient of the division is 10947.36363636, and the remainder is 4e-09.