12570 divided by 66 
We're looking to find how many times 66 goes into 12570.

Advancing to step 1:
The number 66 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 66

Advancing to step 2:
If we divide 12 by 66, we get 0 and a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 12 leaves us with 12.
Grab the next digit (5) from the dividend, add it to 12, then carry on: 125 / 66

On to step 3:
66 goes into 125 1 times with a remainder of 59.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 66 from 125, we get 59.
Bring next digit (7) of the dividend behind the 59 and repeat the process: 597 / 66

Moving on to step 4:
The number 66 fits into 597 9 times, leaving a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 19.0
If we subtract 594 from 597, we get 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 66

Step 5:
When dividing 30 by 66, we get 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 190.0
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 6:
If we divide 300 by 66, we get 4 and a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 190.4
If we take 264 away from 300, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 7:
If we divide 360 by 66, we get 5 and a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 190.45
If we take 330 away from 360, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 8:
66 can be fit into 300 4 times, resulting in a remainder of 36.
Write down 4 as next digit of the result. 
Result so far: 190.454
Subtract 264 from 300 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 9:
The number 66 fits into 360 5 times, leaving a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 190.4545
If we take 330 away from 360, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 10:
66 goes into 300 4 times with a remainder of 36.
The next digit of our result is 4. 
Result so far: 190.45454
Deduct 264 from 300 and we're left with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 11:
If we divide 360 by 66, we get 5 and a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 190.454545
If we subtract 330 from 360, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 12:
If we divide 300 by 66, we get 4 and a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 190.4545454
The remainder is 36 after subtracting 264 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 13:
66 goes into 360 5 times with a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 190.45454545
Subtracting 330 from 360 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The final outcome is 190.45454545, with a leftover of 3e-08.