We're dividing 217742 by 12 
We're looking to find how many times 12 goes into 217742.

Let's proceed to step 1:
12 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 12

Let's proceed to step 2:
12 goes into 21 1 times with a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 12 from 21 leaves us with 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 12

Let's proceed to step 3:
The number 12 fits into 97 8 times, leaving a remainder of 1.
The number 8 becomes the next digit in our result. 
Result so far: 18.0
Subtract 96 from 97 to get 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 12

On to step 4:
17 divided by 12 is 1 with a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 181.0
If we subtract 12 from 17, we get 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 12

Advancing to step 5:
If we divide 54 by 12, we get 4 and a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 1814.0
Subtracting 48 from 54 leaves us with 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 12

Let's proceed to step 6:
If we divide 62 by 12, we get 5 and a remainder of 2.
Use 5 as the next digit of our solution. 
Result so far: 18145.0
Subtract 60 from 62 to 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.

On to step 7:
12 goes into 20 1 times with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 18145.1
Deduct 12 from 20 and we're left with 8.
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 8:
If we divide 80 by 12, we get 6 and a remainder of 8.
The next digit of our result is 6. 
Result so far: 18145.16
Subtracting 72 from 80 leaves us with 8.
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 9:
12 goes into 80 6 times with a remainder of 8.
Write down 6 as next digit of the result. 
Result so far: 18145.166
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 18145.166 with a remaining 0.0008.