99784415 divided by 866 
We want to divide 99784415 by 866.

On to step 1:
The number 866 fits into 9 0 times, leaving a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 866

Step 2:
When dividing 99 by 866, we get 0 with a remainder of 99.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 99 and we're left with 99.
Grab the next digit (7) from the dividend, add it to 99, then carry on: 997 / 866

Moving on to step 3:
866 goes into 997 1 times with a remainder of 131.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 866 from 997 leaves us with 131.
Fetch the next digit (8) from the dividend, attach it to 131 and continue: 1318 / 866

Step 4:
If we divide 1318 by 866, we get 1 and a remainder of 452.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Deduct 866 from 1318 and we're left with 452.
Fetch the next digit (4) from the dividend, attach it to 452 and continue: 4524 / 866

Going ahead to step 5:
4524 divided by 866 is 5 with a remainder of 194.
Record the quotient 5 as the next digit in the result. 
Result so far: 115.0
Deduct 4330 from 4524 and we're left with 194.
Fetch the next digit (4) from the dividend, attach it to 194 and continue: 1944 / 866

Advancing to step 6:
1944 divided by 866 is 2 with a remainder of 212.
Put 2 as the next digit of the answer. 
Result so far: 1152.0
Deduct 1732 from 1944 and we're left with 212.
Append the next digit (1) from the dividend to 212 and continue with: 2121 / 866

On to step 7:
If we divide 2121 by 866, we get 2 and a remainder of 389.
The next digit of our result is 2. 
Result so far: 11522.0
If we subtract 1732 from 2121, we get 389.
Include the next digit (5) from the dividend after 389, then repeat: 3895 / 866

Moving on to step 8:
The number 866 fits into 3895 4 times, leaving a remainder of 431.
The number 4 becomes the next digit in our result. 
Result so far: 115224.0
If we subtract 3464 from 3895, we get 431.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4310, and continue the process.

Let's proceed to step 9:
When dividing 4310 by 866, we get 4 with a remainder of 846.
The number 4 becomes the next digit in our result. 
Result so far: 115224.4
If we subtract 3464 from 4310, we get 846.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8460, and continue the process.

Let's proceed to step 10:
When dividing 8460 by 866, we get 9 with a remainder of 666.
Put 9 as the next digit of the answer. 
Result so far: 115224.49
Deduct 7794 from 8460 and we're left 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.

Let's proceed to step 11:
866 goes into 6660 7 times with a remainder of 598.
The next digit of our result is 7. 
Result so far: 115224.497
The remainder is 598 after subtracting 6062 from 6660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5980, and continue the process.

Advancing to step 12:
866 can be fit into 5980 6 times, resulting in a remainder of 784.
Write down 6 as next digit of the result. 
Result so far: 115224.4976
Deduct 5196 from 5980 and we're left with 784.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7840, and continue the process.

Advancing to step 13:
When dividing 7840 by 866, we get 9 with a remainder of 46.
Write down 9 as next digit of the result. 
Result so far: 115224.49769
If we take 7794 away from 7840, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 14:
866 goes into 460 0 times with a remainder of 460.
Write down 0 as next digit of the result. 
Result so far: 115224.49769
The remainder is 460 after subtracting 0 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

On to step 15:
866 can be fit into 4600 5 times, resulting in a remainder of 270.
The number 5 becomes the next digit in our result. 
Result so far: 115224.4976905
If we subtract 4330 from 4600, we get 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Moving on to step 16:
If we divide 2700 by 866, we get 3 and a remainder of 102.
Record the quotient 3 as the next digit in the result. 
Result so far: 115224.49769053
The remainder is 102 after subtracting 2598 from 2700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

After the division, we end up with 115224.49769053 and a remainder of 1.02e-07.