99958110 divided by 231 
We want to figure out the number of times 99958110 can be divided by 231.

Let's proceed to step 1:
231 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 231

Let's proceed to step 2:
231 goes into 99 0 times with a remainder of 99.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 99 leaves us with 99.
Bring next digit (9) of the dividend behind the 99 and repeat the process: 999 / 231

Moving on to step 3:
When dividing 999 by 231, we get 4 with a remainder of 75.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 924 from 999 leaves us with 75.
Fetch the next digit (5) from the dividend, attach it to 75 and continue: 755 / 231

Moving on to step 4:
When dividing 755 by 231, we get 3 with a remainder of 62.
Record the quotient 3 as the next digit in the result. 
Result so far: 43.0
Subtract 693 from 755 to get 62.
Bring next digit (8) of the dividend behind the 62 and repeat the process: 628 / 231

Step 5:
The number 231 fits into 628 2 times, leaving a remainder of 166.
Record the quotient 2 as the next digit in the result. 
Result so far: 432.0
If we subtract 462 from 628, we get 166.
Append the next digit (1) from the dividend to 166 and continue with: 1661 / 231

Step 6:
When dividing 1661 by 231, we get 7 with a remainder of 44.
Write down 7 as next digit of the result. 
Result so far: 4327.0
Subtract 1617 from 1661 to get 44.
Append the next digit (1) from the dividend to 44 and continue with: 441 / 231

Going ahead to step 7:
231 goes into 441 1 times with a remainder of 210.
Write down 1 as next digit of the result. 
Result so far: 43271.0
The remainder is 210 after subtracting 231 from 441.
Bring next digit (0) of the dividend behind the 210 and repeat the process: 2100 / 231

Going ahead to step 8:
2100 divided by 231 is 9 with a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 432719.0
If we subtract 2079 from 2100, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 9:
When dividing 210 by 231, we get 0 with a remainder of 210.
Put 0 as the next digit of the answer. 
Result so far: 432719.0
If we subtract 0 from 210, we get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

On to step 10:
2100 divided by 231 is 9 with a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 432719.09
Subtracting 2079 from 2100 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 11:
If we divide 210 by 231, we get 0 and a remainder of 210.
The next digit of our result is 0. 
Result so far: 432719.09
The remainder is 210 after subtracting 0 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Advancing to step 12:
When dividing 2100 by 231, we get 9 with a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 432719.0909
If we subtract 2079 from 2100, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 13:
210 divided by 231 is 0 with a remainder of 210.
The number 0 becomes the next digit in our result. 
Result so far: 432719.0909
Subtract 0 from 210 to get 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Going ahead to step 14:
231 goes into 2100 9 times with a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 432719.090909
Deduct 2079 from 2100 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 15:
The number 231 fits into 210 0 times, leaving a remainder of 210.
The number 0 becomes the next digit in our result. 
Result so far: 432719.090909
Deduct 0 from 210 and we're left with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Moving on to step 16:
If we divide 2100 by 231, we get 9 and a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 432719.09090909
Subtract 2079 from 2100 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

In conclusion, the division gives 432719.09090909 with a balance of 2.1e-08.