We're dividing 90813251 by 668 
Let's see how many times 668 fits into 90813251.

Moving on to step 1:
The number 668 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 668

Let's proceed to step 2:
668 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 subtract 0 from 90, we get 90.
Append the next digit (8) from the dividend to 90 and continue with: 908 / 668

Moving on to step 3:
If we divide 908 by 668, we get 1 and a remainder of 240.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 668 from 908 and we're left with 240.
Append the next digit (1) from the dividend to 240 and continue with: 2401 / 668

Step 4:
When dividing 2401 by 668, we get 3 with a remainder of 397.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Deduct 2004 from 2401 and we're left with 397.
Bring next digit (3) of the dividend behind the 397 and repeat the process: 3973 / 668

On to step 5:
When dividing 3973 by 668, we get 5 with a remainder of 633.
Put 5 as the next digit of the answer. 
Result so far: 135.0
If we subtract 3340 from 3973, we get 633.
Fetch the next digit (2) from the dividend, attach it to 633 and continue: 6332 / 668

Let's proceed to step 6:
If we divide 6332 by 668, we get 9 and a remainder of 320.
Put 9 as the next digit of the answer. 
Result so far: 1359.0
Subtracting 6012 from 6332 leaves us with 320.
Bring next digit (5) of the dividend behind the 320 and repeat the process: 3205 / 668

Going ahead to step 7:
If we divide 3205 by 668, we get 4 and a remainder of 533.
The next digit of our result is 4. 
Result so far: 13594.0
Subtracting 2672 from 3205 leaves us with 533.
Take the next digit (1) from the dividend and append it to 533, then repeat: 5331 / 668

On to step 8:
When dividing 5331 by 668, we get 7 with a remainder of 655.
The number 7 becomes the next digit in our result. 
Result so far: 135947.0
The remainder is 655 after subtracting 4676 from 5331.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6550, and continue the process.

Let's proceed to step 9:
6550 divided by 668 is 9 with a remainder of 538.
The number 9 becomes the next digit in our result. 
Result so far: 135947.9
Subtract 6012 from 6550 to get 538.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5380, and continue the process.

Step 10:
5380 divided by 668 is 8 with a remainder of 36.
The next digit of our result is 8. 
Result so far: 135947.98
Subtracting 5344 from 5380 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 11:
668 can be fit into 360 0 times, resulting in a remainder of 360.
The next digit of our result is 0. 
Result so far: 135947.98
Subtract 0 from 360 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 12:
3600 divided by 668 is 5 with a remainder of 260.
The next digit of our result is 5. 
Result so far: 135947.9805
The remainder is 260 after subtracting 3340 from 3600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Advancing to step 13:
If we divide 2600 by 668, we get 3 and a remainder of 596.
Put 3 as the next digit of the answer. 
Result so far: 135947.98053
The remainder is 596 after subtracting 2004 from 2600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

Moving on to step 14:
668 can be fit into 5960 8 times, resulting in a remainder of 616.
The number 8 becomes the next digit in our result. 
Result so far: 135947.980538
Deduct 5344 from 5960 and we're left with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Moving on to step 15:
668 can be fit into 6160 9 times, resulting in a remainder of 148.
The number 9 becomes the next digit in our result. 
Result so far: 135947.9805389
The remainder is 148 after subtracting 6012 from 6160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Advancing to step 16:
When dividing 1480 by 668, we get 2 with a remainder of 144.
Use 2 as the next digit of our solution. 
Result so far: 135947.98053892
Subtracting 1336 from 1480 leaves us with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

The final outcome is 135947.98053892, with a leftover of 1.44e-07.