We're dividing 66901889 by 866 
We want to divide 66901889 by 866.

Advancing to step 1:
6 divided by 866 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 866

Let's proceed to step 2:
The number 866 fits into 66 0 times, leaving a remainder of 66.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Grab the next digit (9) from the dividend, add it to 66, then carry on: 669 / 866

Moving on to step 3:
866 goes into 669 0 times with a remainder of 669.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 669, we get 669.
Fetch the next digit (0) from the dividend, attach it to 669 and continue: 6690 / 866

On to step 4:
866 can be fit into 6690 7 times, resulting in a remainder of 628.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we subtract 6062 from 6690, we get 628.
Take the next digit (1) from the dividend and append it to 628, then repeat: 6281 / 866

Step 5:
866 can be fit into 6281 7 times, resulting in a remainder of 219.
Use 7 as the next digit of our solution. 
Result so far: 77.0
If we take 6062 away from 6281, we end up with 219.
Append the next digit (8) from the dividend to 219 and continue with: 2198 / 866

Let's proceed to step 6:
866 can be fit into 2198 2 times, resulting in a remainder of 466.
Write down 2 as next digit of the result. 
Result so far: 772.0
If we take 1732 away from 2198, we end up with 466.
Bring next digit (8) of the dividend behind the 466 and repeat the process: 4668 / 866

Moving on to step 7:
866 can be fit into 4668 5 times, resulting in a remainder of 338.
Write down 5 as next digit of the result. 
Result so far: 7725.0
The remainder is 338 after subtracting 4330 from 4668.
Fetch the next digit (9) from the dividend, attach it to 338 and continue: 3389 / 866

Step 8:
866 goes into 3389 3 times with a remainder of 791.
The next digit of our result is 3. 
Result so far: 77253.0
Subtract 2598 from 3389 to get 791.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7910, and continue the process.

Moving on to step 9:
866 can be fit into 7910 9 times, resulting in a remainder of 116.
Record the quotient 9 as the next digit in the result. 
Result so far: 77253.9
Subtract 7794 from 7910 to get 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Going ahead to step 10:
If we divide 1160 by 866, we get 1 and a remainder of 294.
Write down 1 as next digit of the result. 
Result so far: 77253.91
If we subtract 866 from 1160, we get 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Let's proceed to step 11:
2940 divided by 866 is 3 with a remainder of 342.
The number 3 becomes the next digit in our result. 
Result so far: 77253.913
Subtract 2598 from 2940 to get 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

Let's proceed to step 12:
If we divide 3420 by 866, we get 3 and a remainder of 822.
Put 3 as the next digit of the answer. 
Result so far: 77253.9133
The remainder is 822 after subtracting 2598 from 3420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8220, and continue the process.

The quotient of the division is 77253.9133, and the remainder is 0.00822.