We divide 121742 by 10
We want to divide 121742 by 10.

Going ahead to step 1:
1 divided by 10 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 10

Step 2:
12 divided by 10 is 1 with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 2 after subtracting 10 from 12.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 10

Moving on to step 3:
10 goes into 21 2 times with a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we take 20 away from 21, we end up with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 10

Going ahead to step 4:
The number 10 fits into 17 1 times, leaving a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 121.0
Subtracting 10 from 17 leaves us with 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 10

On to step 5:
If we divide 74 by 10, we get 7 and a remainder of 4.
The next digit of our result is 7. 
Result so far: 1217.0
Subtracting 70 from 74 leaves us with 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 10

Advancing to step 6:
10 goes into 42 4 times with a remainder of 2.
The next digit of our result is 4. 
Result so far: 12174.0
If we subtract 40 from 42, we get 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 7:
The number 10 fits into 20 2 times, leaving a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 12174.2
Subtracting 20 from 20 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
0 divided by 10 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 12174.2
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 9:
0 divided by 10 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 12174.2
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 12174.2 with a balance of 0.0.