We divide 212142 by 18
We want to divide 212142 by 18.

Advancing to step 1:
2 divided by 18 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 18

Advancing to step 2:
When dividing 21 by 18, we get 1 with a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 18 away from 21, we end up with 3.
Fetch the next digit (2) from the dividend, attach it to 3 and continue: 32 / 18

Step 3:
The number 18 fits into 32 1 times, leaving a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtract 18 from 32 to get 14.
Bring next digit (1) of the dividend behind the 14 and repeat the process: 141 / 18

Step 4:
When dividing 141 by 18, we get 7 with a remainder of 15.
Put 7 as the next digit of the answer. 
Result so far: 117.0
Deduct 126 from 141 and we're left with 15.
Append the next digit (4) from the dividend to 15 and continue with: 154 / 18

Going ahead to step 5:
The number 18 fits into 154 8 times, leaving a remainder of 10.
The next digit of our result is 8. 
Result so far: 1178.0
Subtract 144 from 154 to get 10.
Append the next digit (2) from the dividend to 10 and continue with: 102 / 18

Step 6:
18 goes into 102 5 times with a remainder of 12.
Use 5 as the next digit of our solution. 
Result so far: 11785.0
Subtract 90 from 102 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 7:
18 goes into 120 6 times with a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 11785.6
The remainder is 12 after subtracting 108 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 8:
120 divided by 18 is 6 with a remainder of 12.
The next digit of our result is 6. 
Result so far: 11785.66
The remainder is 12 after subtracting 108 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 11785.66 with a remainder of 0.012.