We divide 86811191 by 258
We want to divide 86811191 by 258.

Going ahead to step 1:
The number 258 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 258

Let's proceed to step 2:
If we divide 86 by 258, we get 0 and a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Include the next digit (8) from the dividend after 86, then repeat: 868 / 258

Let's proceed to step 3:
258 can be fit into 868 3 times, resulting in a remainder of 94.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 774 away from 868, we end up with 94.
Grab the next digit (1) from the dividend, add it to 94, then carry on: 941 / 258

On to step 4:
258 goes into 941 3 times with a remainder of 167.
The next digit of our result is 3. 
Result so far: 33.0
The remainder is 167 after subtracting 774 from 941.
Include the next digit (1) from the dividend after 167, then repeat: 1671 / 258

Advancing to step 5:
The number 258 fits into 1671 6 times, leaving a remainder of 123.
Put 6 as the next digit of the answer. 
Result so far: 336.0
The remainder is 123 after subtracting 1548 from 1671.
Fetch the next digit (1) from the dividend, attach it to 123 and continue: 1231 / 258

Let's proceed to step 6:
If we divide 1231 by 258, we get 4 and a remainder of 199.
The number 4 becomes the next digit in our result. 
Result so far: 3364.0
Deduct 1032 from 1231 and we're left with 199.
Include the next digit (9) from the dividend after 199, then repeat: 1999 / 258

Going ahead to step 7:
1999 divided by 258 is 7 with a remainder of 193.
Use 7 as the next digit of our solution. 
Result so far: 33647.0
If we take 1806 away from 1999, we end up with 193.
Append the next digit (1) from the dividend to 193 and continue with: 1931 / 258

Moving on to step 8:
If we divide 1931 by 258, we get 7 and a remainder of 125.
Record the quotient 7 as the next digit in the result. 
Result so far: 336477.0
Subtract 1806 from 1931 to get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Going ahead to step 9:
When dividing 1250 by 258, we get 4 with a remainder of 218.
The number 4 becomes the next digit in our result. 
Result so far: 336477.4
Subtract 1032 from 1250 to get 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

On to step 10:
The number 258 fits into 2180 8 times, leaving a remainder of 116.
Use 8 as the next digit of our solution. 
Result so far: 336477.48
If we take 2064 away from 2180, we end up with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

On to step 11:
258 goes into 1160 4 times with a remainder of 128.
Record the quotient 4 as the next digit in the result. 
Result so far: 336477.484
Subtract 1032 from 1160 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Step 12:
If we divide 1280 by 258, we get 4 and a remainder of 248.
Put 4 as the next digit of the answer. 
Result so far: 336477.4844
Deduct 1032 from 1280 and we're left with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

The final outcome is 336477.4844, with a leftover of 0.00248.