857991 ÷ 89 
We're looking to find how many times 89 goes into 857991.

Step 1:
8 divided by 89 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 89

Let's proceed to step 2:
The number 89 fits into 85 0 times, leaving a remainder of 85.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 85 to get 85.
Include the next digit (7) from the dividend after 85, then repeat: 857 / 89

Going ahead to step 3:
857 divided by 89 is 9 with a remainder of 56.
The next digit of our result is 9. 
Result so far: 9.0
If we subtract 801 from 857, we get 56.
Take the next digit (9) from the dividend and append it to 56, then repeat: 569 / 89

Advancing to step 4:
89 can be fit into 569 6 times, resulting in a remainder of 35.
Record the quotient 6 as the next digit in the result. 
Result so far: 96.0
If we subtract 534 from 569, we get 35.
Bring next digit (9) of the dividend behind the 35 and repeat the process: 359 / 89

Advancing to step 5:
89 can be fit into 359 4 times, resulting in a remainder of 3.
Use 4 as the next digit of our solution. 
Result so far: 964.0
If we take 356 away from 359, we end up with 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 89

Advancing to step 6:
31 divided by 89 is 0 with a remainder of 31.
The next digit of our result is 0. 
Result so far: 9640.0
The remainder is 31 after subtracting 0 from 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 7:
89 can be fit into 310 3 times, resulting in a remainder of 43.
Write down 3 as next digit of the result. 
Result so far: 9640.3
Subtract 267 from 310 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 8:
89 goes into 430 4 times with a remainder of 74.
The number 4 becomes the next digit in our result. 
Result so far: 9640.34
Subtracting 356 from 430 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

On to step 9:
89 can be fit into 740 8 times, resulting in a remainder of 28.
Record the quotient 8 as the next digit in the result. 
Result so far: 9640.348
Subtract 712 from 740 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 10:
The number 89 fits into 280 3 times, leaving a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 9640.3483
If we subtract 267 from 280, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 11:
If we divide 130 by 89, we get 1 and a remainder of 41.
The next digit of our result is 1. 
Result so far: 9640.34831
If we take 89 away from 130, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Going ahead to step 12:
89 can be fit into 410 4 times, resulting in a remainder of 54.
Record the quotient 4 as the next digit in the result. 
Result so far: 9640.348314
Subtracting 356 from 410 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 13:
540 divided by 89 is 6 with a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 9640.3483146
Subtract 534 from 540 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 14:
When dividing 60 by 89, we get 0 with a remainder of 60.
The next digit of our result is 0. 
Result so far: 9640.3483146
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.

The final result is 9640.3483146 with a remainder of 6e-08.