Let's divide 258391 by 99
We're looking to find how many times 99 goes into 258391.

Moving on to step 1:
99 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 99

Moving on to step 2:
The number 99 fits into 25 0 times, leaving a remainder of 25.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 25 leaves us with 25.
Fetch the next digit (8) from the dividend, attach it to 25 and continue: 258 / 99

On to step 3:
258 divided by 99 is 2 with a remainder of 60.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 198 from 258 leaves us with 60.
Fetch the next digit (3) from the dividend, attach it to 60 and continue: 603 / 99

Step 4:
99 goes into 603 6 times with a remainder of 9.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
If we subtract 594 from 603, we get 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 99

Moving on to step 5:
99 goes into 99 1 times with a remainder of 0.
The next digit of our result is 1. 
Result so far: 261.0
Subtracting 99 from 99 leaves us with 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 99

Let's proceed to step 6:
The number 99 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 2610.0
Subtracting 0 from 1 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
10 divided by 99 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 2610.0
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
When dividing 100 by 99, we get 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 2610.01
Subtract 99 from 100 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 9:
99 goes into 10 0 times with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 2610.01
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 10:
If we divide 100 by 99, we get 1 and a remainder of 1.
The next digit of our result is 1. 
Result so far: 2610.0101
The remainder is 1 after subtracting 99 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 11:
If we divide 10 by 99, we get 0 and a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 2610.0101
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 12:
100 divided by 99 is 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 2610.010101
Subtract 99 from 100 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 13:
When dividing 10 by 99, we get 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 2610.010101
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 14:
99 can be fit into 100 1 times, resulting in a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 2610.01010101
Subtracting 99 from 100 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final outcome is 2610.01010101, with a leftover of 1e-09.