217289 divided by 12 
Let's see how many times 12 fits into 217289.

Step 1:
2 divided by 12 is 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 12

Moving on to step 2:
When dividing 21 by 12, we get 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 12 from 21, we get 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 12

On to step 3:
97 divided by 12 is 8 with a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 18.0
If we take 96 away from 97, we end up with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 12

Advancing to step 4:
The number 12 fits into 12 1 times, leaving a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 181.0
Deduct 12 from 12 and we're left with 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 12

On to step 5:
When dividing 8 by 12, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 1810.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 12

Let's proceed to step 6:
12 can be fit into 89 7 times, resulting in a remainder of 5.
Put 7 as the next digit of the answer. 
Result so far: 18107.0
Subtracting 84 from 89 leaves us 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.

Step 7:
If we divide 50 by 12, we get 4 and a remainder of 2.
The next digit of our result is 4. 
Result so far: 18107.4
Subtract 48 from 50 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 8:
When dividing 20 by 12, we get 1 with a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 18107.41
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.

Going ahead to step 9:
80 divided by 12 is 6 with a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 18107.416
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.

Going ahead to step 10:
12 can be fit into 80 6 times, resulting in a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 18107.4166
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.

The final outcome is 18107.4166, with a leftover of 8e-05.