90990340 divided by 863 
Our goal is to divide 90990340 by 863.

On to step 1:
The number 863 fits into 9 0 times, leaving a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 863

Advancing to step 2:
863 can be fit into 90 0 times, resulting in a remainder of 90.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 90 after subtracting 0 from 90.
Bring next digit (9) of the dividend behind the 90 and repeat the process: 909 / 863

Advancing to step 3:
909 divided by 863 is 1 with a remainder of 46.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 863 from 909 and we're left with 46.
Grab the next digit (9) from the dividend, add it to 46, then carry on: 469 / 863

Going ahead to step 4:
The number 863 fits into 469 0 times, leaving a remainder of 469.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Deduct 0 from 469 and we're left with 469.
Fetch the next digit (0) from the dividend, attach it to 469 and continue: 4690 / 863

On to step 5:
When dividing 4690 by 863, we get 5 with a remainder of 375.
Use 5 as the next digit of our solution. 
Result so far: 105.0
Subtract 4315 from 4690 to get 375.
Include the next digit (3) from the dividend after 375, then repeat: 3753 / 863

On to step 6:
863 goes into 3753 4 times with a remainder of 301.
The next digit of our result is 4. 
Result so far: 1054.0
If we subtract 3452 from 3753, we get 301.
Take the next digit (4) from the dividend and append it to 301, then repeat: 3014 / 863

Let's proceed to step 7:
863 goes into 3014 3 times with a remainder of 425.
The next digit of our result is 3. 
Result so far: 10543.0
If we take 2589 away from 3014, we end up with 425.
Include the next digit (0) from the dividend after 425, then repeat: 4250 / 863

Let's proceed to step 8:
The number 863 fits into 4250 4 times, leaving a remainder of 798.
Use 4 as the next digit of our solution. 
Result so far: 105434.0
If we subtract 3452 from 4250, we get 798.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7980, and continue the process.

Let's proceed to step 9:
7980 divided by 863 is 9 with a remainder of 213.
The number 9 becomes the next digit in our result. 
Result so far: 105434.9
The remainder is 213 after subtracting 7767 from 7980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

Advancing to step 10:
863 goes into 2130 2 times with a remainder of 404.
The number 2 becomes the next digit in our result. 
Result so far: 105434.92
Subtracting 1726 from 2130 leaves us with 404.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

Going ahead to step 11:
863 can be fit into 4040 4 times, resulting in a remainder of 588.
Put 4 as the next digit of the answer. 
Result so far: 105434.924
Subtract 3452 from 4040 to get 588.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5880, and continue the process.

Advancing to step 12:
The number 863 fits into 5880 6 times, leaving a remainder of 702.
Put 6 as the next digit of the answer. 
Result so far: 105434.9246
Subtract 5178 from 5880 to get 702.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7020, and continue the process.

On to step 13:
7020 divided by 863 is 8 with a remainder of 116.
The next digit of our result is 8. 
Result so far: 105434.92468
Deduct 6904 from 7020 and we're left 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.

Step 14:
863 goes into 1160 1 times with a remainder of 297.
Use 1 as the next digit of our solution. 
Result so far: 105434.924681
If we subtract 863 from 1160, we get 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

On to step 15:
863 can be fit into 2970 3 times, resulting in a remainder of 381.
Record the quotient 3 as the next digit in the result. 
Result so far: 105434.9246813
The remainder is 381 after subtracting 2589 from 2970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

On to step 16:
When dividing 3810 by 863, we get 4 with a remainder of 358.
Use 4 as the next digit of our solution. 
Result so far: 105434.92468134
If we subtract 3452 from 3810, we get 358.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

In conclusion, the division gives 105434.92468134 with a balance of 3.58e-07.