We're dividing 90721879 by 591 
We want to divide 90721879 by 591.

Going ahead to step 1:
9 divided by 591 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 591

On to step 2:
The number 591 fits into 90 0 times, leaving a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 90 after subtracting 0 from 90.
Grab the next digit (7) from the dividend, add it to 90, then carry on: 907 / 591

On to step 3:
591 can be fit into 907 1 times, resulting in a remainder of 316.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 591 from 907 to get 316.
Take the next digit (2) from the dividend and append it to 316, then repeat: 3162 / 591

Moving on to step 4:
3162 divided by 591 is 5 with a remainder of 207.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we subtract 2955 from 3162, we get 207.
Grab the next digit (1) from the dividend, add it to 207, then carry on: 2071 / 591

Let's proceed to step 5:
591 can be fit into 2071 3 times, resulting in a remainder of 298.
Put 3 as the next digit of the answer. 
Result so far: 153.0
If we take 1773 away from 2071, we end up with 298.
Include the next digit (8) from the dividend after 298, then repeat: 2988 / 591

Advancing to step 6:
591 can be fit into 2988 5 times, resulting in a remainder of 33.
Use 5 as the next digit of our solution. 
Result so far: 1535.0
If we take 2955 away from 2988, we end up with 33.
Include the next digit (7) from the dividend after 33, then repeat: 337 / 591

Step 7:
591 can be fit into 337 0 times, resulting in a remainder of 337.
The number 0 becomes the next digit in our result. 
Result so far: 15350.0
If we subtract 0 from 337, we get 337.
Fetch the next digit (9) from the dividend, attach it to 337 and continue: 3379 / 591

Moving on to step 8:
3379 divided by 591 is 5 with a remainder of 424.
Record the quotient 5 as the next digit in the result. 
Result so far: 153505.0
Deduct 2955 from 3379 and we're left with 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Moving on to step 9:
The number 591 fits into 4240 7 times, leaving a remainder of 103.
Record the quotient 7 as the next digit in the result. 
Result so far: 153505.7
If we take 4137 away from 4240, we end up with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Going ahead to step 10:
The number 591 fits into 1030 1 times, leaving a remainder of 439.
Write down 1 as next digit of the result. 
Result so far: 153505.71
Subtracting 591 from 1030 leaves us with 439.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4390, and continue the process.

Moving on to step 11:
When dividing 4390 by 591, we get 7 with a remainder of 253.
The next digit of our result is 7. 
Result so far: 153505.717
Subtract 4137 from 4390 to get 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Step 12:
The number 591 fits into 2530 4 times, leaving a remainder of 166.
The number 4 becomes the next digit in our result. 
Result so far: 153505.7174
Subtracting 2364 from 2530 leaves us with 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Let's proceed to step 13:
When dividing 1660 by 591, we get 2 with a remainder of 478.
Record the quotient 2 as the next digit in the result. 
Result so far: 153505.71742
Deduct 1182 from 1660 and we're left with 478.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4780, and continue the process.

On to step 14:
591 goes into 4780 8 times with a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 153505.717428
If we take 4728 away from 4780, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 15:
When dividing 520 by 591, we get 0 with a remainder of 520.
Use 0 as the next digit of our solution. 
Result so far: 153505.717428
If we subtract 0 from 520, we get 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Let's proceed to step 16:
If we divide 5200 by 591, we get 8 and a remainder of 472.
Use 8 as the next digit of our solution. 
Result so far: 153505.71742808
Deduct 4728 from 5200 and we're left with 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4720, and continue the process.

The final result is 153505.71742808 with a remainder of 4.72e-07.