90432456 ÷ 231 
We want to divide 90432456 by 231.

Going ahead to step 1:
231 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 231

Advancing to step 2:
231 can be fit into 90 0 times, resulting in a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 90, we end up with 90.
Grab the next digit (4) from the dividend, add it to 90, then carry on: 904 / 231

Going ahead to step 3:
When dividing 904 by 231, we get 3 with a remainder of 211.
The next digit of our result is 3. 
Result so far: 3.0
If we take 693 away from 904, we end up with 211.
Include the next digit (3) from the dividend after 211, then repeat: 2113 / 231

Going ahead to step 4:
When dividing 2113 by 231, we get 9 with a remainder of 34.
The next digit of our result is 9. 
Result so far: 39.0
Subtract 2079 from 2113 to get 34.
Include the next digit (2) from the dividend after 34, then repeat: 342 / 231

Step 5:
342 divided by 231 is 1 with a remainder of 111.
Write down 1 as next digit of the result. 
Result so far: 391.0
If we subtract 231 from 342, we get 111.
Include the next digit (4) from the dividend after 111, then repeat: 1114 / 231

Advancing to step 6:
If we divide 1114 by 231, we get 4 and a remainder of 190.
Write down 4 as next digit of the result. 
Result so far: 3914.0
Deduct 924 from 1114 and we're left with 190.
Bring next digit (5) of the dividend behind the 190 and repeat the process: 1905 / 231

Moving on to step 7:
When dividing 1905 by 231, we get 8 with a remainder of 57.
The number 8 becomes the next digit in our result. 
Result so far: 39148.0
If we take 1848 away from 1905, we end up with 57.
Append the next digit (6) from the dividend to 57 and continue with: 576 / 231

Advancing to step 8:
If we divide 576 by 231, we get 2 and a remainder of 114.
The next digit of our result is 2. 
Result so far: 391482.0
If we subtract 462 from 576, we get 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Advancing to step 9:
1140 divided by 231 is 4 with a remainder of 216.
Use 4 as the next digit of our solution. 
Result so far: 391482.4
Subtracting 924 from 1140 leaves us with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

On to step 10:
If we divide 2160 by 231, we get 9 and a remainder of 81.
The next digit of our result is 9. 
Result so far: 391482.49
Subtract 2079 from 2160 to get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Advancing to step 11:
If we divide 810 by 231, we get 3 and a remainder of 117.
Use 3 as the next digit of our solution. 
Result so far: 391482.493
If we take 693 away from 810, we end up with 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Let's proceed to step 12:
231 goes into 1170 5 times with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 391482.4935
The remainder is 15 after subtracting 1155 from 1170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 13:
If we divide 150 by 231, we get 0 and a remainder of 150.
Put 0 as the next digit of the answer. 
Result so far: 391482.4935
If we subtract 0 from 150, we get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Moving on to step 14:
The number 231 fits into 1500 6 times, leaving a remainder of 114.
Use 6 as the next digit of our solution. 
Result so far: 391482.493506
If we take 1386 away from 1500, we end up with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

On to step 15:
If we divide 1140 by 231, we get 4 and a remainder of 216.
The number 4 becomes the next digit in our result. 
Result so far: 391482.4935064
Subtracting 924 from 1140 leaves us with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Advancing to step 16:
231 can be fit into 2160 9 times, resulting in a remainder of 81.
Put 9 as the next digit of the answer. 
Result so far: 391482.49350649
If we subtract 2079 from 2160, we get 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Our division results in 391482.49350649 with a remaining 8.1e-08.