We're dividing 20906970 by 866 
We're looking to find how many times 866 goes into 20906970.

Going ahead to step 1:
If we divide 2 by 866, we get 0 and a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 866

Advancing to step 2:
If we divide 20 by 866, we get 0 and a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Grab the next digit (9) from the dividend, add it to 20, then carry on: 209 / 866

Let's proceed to step 3:
866 goes into 209 0 times with a remainder of 209.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 209 leaves us with 209.
Grab the next digit (0) from the dividend, add it to 209, then carry on: 2090 / 866

Step 4:
When dividing 2090 by 866, we get 2 with a remainder of 358.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 358 after subtracting 1732 from 2090.
Include the next digit (6) from the dividend after 358, then repeat: 3586 / 866

Step 5:
3586 divided by 866 is 4 with a remainder of 122.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
Deduct 3464 from 3586 and we're left with 122.
Fetch the next digit (9) from the dividend, attach it to 122 and continue: 1229 / 866

Advancing to step 6:
866 can be fit into 1229 1 times, resulting in a remainder of 363.
The next digit of our result is 1. 
Result so far: 241.0
Deduct 866 from 1229 and we're left with 363.
Include the next digit (7) from the dividend after 363, then repeat: 3637 / 866

Step 7:
The number 866 fits into 3637 4 times, leaving a remainder of 173.
Record the quotient 4 as the next digit in the result. 
Result so far: 2414.0
Subtract 3464 from 3637 to get 173.
Append the next digit (0) from the dividend to 173 and continue with: 1730 / 866

Step 8:
866 goes into 1730 1 times with a remainder of 864.
Write down 1 as next digit of the result. 
Result so far: 24141.0
If we subtract 866 from 1730, we get 864.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8640, and continue the process.

Advancing to step 9:
866 goes into 8640 9 times with a remainder of 846.
Record the quotient 9 as the next digit in the result. 
Result so far: 24141.9
If we take 7794 away from 8640, we end up with 846.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8460, and continue the process.

Moving on to step 10:
If we divide 8460 by 866, we get 9 and a remainder of 666.
The next digit of our result is 9. 
Result so far: 24141.99
Subtracting 7794 from 8460 leaves us with 666.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6660, and continue the process.

The final outcome is 24141.99, with a leftover of 0.666.