We're dividing 20907090 by 66 
We want to divide 20907090 by 66.

Advancing to step 1:
When dividing 2 by 66, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 66

Moving on to step 2:
66 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Include the next digit (9) from the dividend after 20, then repeat: 209 / 66

Let's proceed to step 3:
209 divided by 66 is 3 with a remainder of 11.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 11 after subtracting 198 from 209.
Fetch the next digit (0) from the dividend, attach it to 11 and continue: 110 / 66

On to step 4:
The number 66 fits into 110 1 times, leaving a remainder of 44.
Write down 1 as next digit of the result. 
Result so far: 31.0
If we take 66 away from 110, we end up with 44.
Grab the next digit (7) from the dividend, add it to 44, then carry on: 447 / 66

Advancing to step 5:
66 can be fit into 447 6 times, resulting in a remainder of 51.
Write down 6 as next digit of the result. 
Result so far: 316.0
The remainder is 51 after subtracting 396 from 447.
Bring next digit (0) of the dividend behind the 51 and repeat the process: 510 / 66

Step 6:
The number 66 fits into 510 7 times, leaving a remainder of 48.
The number 7 becomes the next digit in our result. 
Result so far: 3167.0
Subtracting 462 from 510 leaves us with 48.
Include the next digit (9) from the dividend after 48, then repeat: 489 / 66

On to step 7:
If we divide 489 by 66, we get 7 and a remainder of 27.
The number 7 becomes the next digit in our result. 
Result so far: 31677.0
Subtract 462 from 489 to get 27.
Take the next digit (0) from the dividend and append it to 27, then repeat: 270 / 66

On to step 8:
The number 66 fits into 270 4 times, leaving a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 316774.0
The remainder is 6 after subtracting 264 from 270.
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 9:
If we divide 60 by 66, we get 0 and a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 316774.0
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 10:
66 goes into 600 9 times with a remainder of 6.
The next digit of our result is 9. 
Result so far: 316774.09
Subtracting 594 from 600 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.

Let's proceed to step 11:
If we divide 60 by 66, we get 0 and a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 316774.09
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 12:
If we divide 600 by 66, we get 9 and a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 316774.0909
Subtracting 594 from 600 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 13:
60 divided by 66 is 0 with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 316774.0909
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 14:
When dividing 600 by 66, we get 9 with a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 316774.090909
If we take 594 away from 600, we end up 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.

Moving on to step 15:
66 can be fit into 60 0 times, resulting in a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 316774.090909
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 16:
The number 66 fits into 600 9 times, leaving a remainder of 6.
The next digit of our result is 9. 
Result so far: 316774.09090909
The remainder is 6 after subtracting 594 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final outcome is 316774.09090909, with a leftover of 6e-09.