859866 divided by 99 
We're looking to find how many times 99 goes into 859866.

On to step 1:
The number 99 fits into 8 0 times, leaving a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 99

Advancing to step 2:
When dividing 85 by 99, we get 0 with a remainder of 85.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 85 to get 85.
Bring next digit (9) of the dividend behind the 85 and repeat the process: 859 / 99

Let's proceed to step 3:
If we divide 859 by 99, we get 8 and a remainder of 67.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtracting 792 from 859 leaves us with 67.
Append the next digit (8) from the dividend to 67 and continue with: 678 / 99

Moving on to step 4:
99 can be fit into 678 6 times, resulting in a remainder of 84.
Put 6 as the next digit of the answer. 
Result so far: 86.0
Subtracting 594 from 678 leaves us with 84.
Fetch the next digit (6) from the dividend, attach it to 84 and continue: 846 / 99

Step 5:
99 can be fit into 846 8 times, resulting in a remainder of 54.
The next digit of our result is 8. 
Result so far: 868.0
Deduct 792 from 846 and we're left with 54.
Bring next digit (6) of the dividend behind the 54 and repeat the process: 546 / 99

Step 6:
When dividing 546 by 99, we get 5 with a remainder of 51.
The next digit of our result is 5. 
Result so far: 8685.0
If we take 495 away from 546, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 7:
99 goes into 510 5 times with a remainder of 15.
The next digit of our result is 5. 
Result so far: 8685.5
Deduct 495 from 510 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 8:
99 can be fit into 150 1 times, resulting in a remainder of 51.
Use 1 as the next digit of our solution. 
Result so far: 8685.51
Deduct 99 from 150 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 9:
510 divided by 99 is 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 8685.515
Subtract 495 from 510 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 10:
150 divided by 99 is 1 with a remainder of 51.
Record the quotient 1 as the next digit in the result. 
Result so far: 8685.5151
Subtract 99 from 150 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Let's proceed to step 11:
99 goes into 510 5 times with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 8685.51515
Deduct 495 from 510 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 12:
99 can be fit into 150 1 times, resulting in a remainder of 51.
Write down 1 as next digit of the result. 
Result so far: 8685.515151
If we take 99 away from 150, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 13:
If we divide 510 by 99, we get 5 and a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 8685.5151515
Subtracting 495 from 510 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 14:
99 goes into 150 1 times with a remainder of 51.
Put 1 as the next digit of the answer. 
Result so far: 8685.51515151
Deduct 99 from 150 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

The quotient of the division is 8685.51515151, and the remainder is 5.1e-08.