156561 ÷ 12 
We're looking to find how many times 12 goes into 156561.

Going ahead to step 1:
12 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 12

On to step 2:
The number 12 fits into 15 1 times, leaving a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 3 after subtracting 12 from 15.
Include the next digit (6) from the dividend after 3, then repeat: 36 / 12

Step 3:
12 goes into 36 3 times with a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we subtract 36 from 36, we get 0.
Grab the next digit (5) from the dividend, add it to 0, then carry on: 5 / 12

Advancing to step 4:
If we divide 5 by 12, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 130.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (6) from the dividend, attach it to 5 and continue: 56 / 12

Moving on to step 5:
When dividing 56 by 12, we get 4 with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 1304.0
If we subtract 48 from 56, we get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 12

Step 6:
The number 12 fits into 81 6 times, leaving a remainder of 9.
Use 6 as the next digit of our solution. 
Result so far: 13046.0
Deduct 72 from 81 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 7:
12 goes into 90 7 times with a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 13046.7
Subtracting 84 from 90 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
When dividing 60 by 12, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 13046.75
If we take 60 away from 60, 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.

Advancing to step 9:
If we divide 0 by 12, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 13046.75
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.

Moving on to step 10:
12 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 13046.75
Subtracting 0 from 0 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.

The final result is 13046.75 with a remainder of 0.0.