Let's divide 87809791 by 231
We're looking to find how many times 231 goes into 87809791.

Going ahead to step 1:
8 divided by 231 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 231

Moving on to step 2:
The number 231 fits into 87 0 times, leaving a remainder of 87.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 87 and we're left with 87.
Append the next digit (8) from the dividend to 87 and continue with: 878 / 231

Going ahead to step 3:
878 divided by 231 is 3 with a remainder of 185.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 693 from 878 leaves us with 185.
Fetch the next digit (0) from the dividend, attach it to 185 and continue: 1850 / 231

Advancing to step 4:
If we divide 1850 by 231, we get 8 and a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
Deduct 1848 from 1850 and we're left with 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 231

On to step 5:
29 divided by 231 is 0 with a remainder of 29.
Record the quotient 0 as the next digit in the result. 
Result so far: 380.0
The remainder is 29 after subtracting 0 from 29.
Bring next digit (7) of the dividend behind the 29 and repeat the process: 297 / 231

Step 6:
The number 231 fits into 297 1 times, leaving a remainder of 66.
The number 1 becomes the next digit in our result. 
Result so far: 3801.0
The remainder is 66 after subtracting 231 from 297.
Include the next digit (9) from the dividend after 66, then repeat: 669 / 231

Let's proceed to step 7:
231 goes into 669 2 times with a remainder of 207.
The next digit of our result is 2. 
Result so far: 38012.0
The remainder is 207 after subtracting 462 from 669.
Append the next digit (1) from the dividend to 207 and continue with: 2071 / 231

Advancing to step 8:
The number 231 fits into 2071 8 times, leaving a remainder of 223.
The number 8 becomes the next digit in our result. 
Result so far: 380128.0
Subtract 1848 from 2071 to get 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

On to step 9:
If we divide 2230 by 231, we get 9 and a remainder of 151.
The number 9 becomes the next digit in our result. 
Result so far: 380128.9
Subtracting 2079 from 2230 leaves us with 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Moving on to step 10:
1510 divided by 231 is 6 with a remainder of 124.
Record the quotient 6 as the next digit in the result. 
Result so far: 380128.96
If we subtract 1386 from 1510, we get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Let's proceed to step 11:
231 goes into 1240 5 times with a remainder of 85.
Use 5 as the next digit of our solution. 
Result so far: 380128.965
The remainder is 85 after subtracting 1155 from 1240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

On to step 12:
The number 231 fits into 850 3 times, leaving a remainder of 157.
The next digit of our result is 3. 
Result so far: 380128.9653
If we subtract 693 from 850, we get 157.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

Let's proceed to step 13:
If we divide 1570 by 231, we get 6 and a remainder of 184.
Write down 6 as next digit of the result. 
Result so far: 380128.96536
Deduct 1386 from 1570 and we're left with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Advancing to step 14:
When dividing 1840 by 231, we get 7 with a remainder of 223.
Put 7 as the next digit of the answer. 
Result so far: 380128.965367
Subtracting 1617 from 1840 leaves us with 223.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2230, and continue the process.

Advancing to step 15:
If we divide 2230 by 231, we get 9 and a remainder of 151.
The next digit of our result is 9. 
Result so far: 380128.9653679
Subtracting 2079 from 2230 leaves us with 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Step 16:
When dividing 1510 by 231, we get 6 with a remainder of 124.
Record the quotient 6 as the next digit in the result. 
Result so far: 380128.96536796
Deduct 1386 from 1510 and we're left with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

The final result is 380128.96536796 with a remainder of 1.24e-07.