30640289 ÷ 821 
We want to figure out the number of times 30640289 can be divided by 821.

Going ahead to step 1:
When dividing 3 by 821, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 821

Step 2:
When dividing 30 by 821, we get 0 with a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Fetch the next digit (6) from the dividend, attach it to 30 and continue: 306 / 821

Going ahead to step 3:
If we divide 306 by 821, we get 0 and a remainder of 306.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 306 leaves us with 306.
Include the next digit (4) from the dividend after 306, then repeat: 3064 / 821

On to step 4:
If we divide 3064 by 821, we get 3 and a remainder of 601.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 2463 from 3064 to get 601.
Grab the next digit (0) from the dividend, add it to 601, then carry on: 6010 / 821

Advancing to step 5:
6010 divided by 821 is 7 with a remainder of 263.
Put 7 as the next digit of the answer. 
Result so far: 37.0
Subtract 5747 from 6010 to get 263.
Take the next digit (2) from the dividend and append it to 263, then repeat: 2632 / 821

Moving on to step 6:
821 can be fit into 2632 3 times, resulting in a remainder of 169.
Record the quotient 3 as the next digit in the result. 
Result so far: 373.0
If we take 2463 away from 2632, we end up with 169.
Fetch the next digit (8) from the dividend, attach it to 169 and continue: 1698 / 821

Advancing to step 7:
The number 821 fits into 1698 2 times, leaving a remainder of 56.
Use 2 as the next digit of our solution. 
Result so far: 3732.0
If we subtract 1642 from 1698, we get 56.
Grab the next digit (9) from the dividend, add it to 56, then carry on: 569 / 821

On to step 8:
If we divide 569 by 821, we get 0 and a remainder of 569.
Put 0 as the next digit of the answer. 
Result so far: 37320.0
Deduct 0 from 569 and we're left with 569.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5690, and continue the process.

On to step 9:
5690 divided by 821 is 6 with a remainder of 764.
Record the quotient 6 as the next digit in the result. 
Result so far: 37320.6
The remainder is 764 after subtracting 4926 from 5690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7640, and continue the process.

Moving on to step 10:
When dividing 7640 by 821, we get 9 with a remainder of 251.
Use 9 as the next digit of our solution. 
Result so far: 37320.69
The remainder is 251 after subtracting 7389 from 7640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2510, and continue the process.

On to step 11:
2510 divided by 821 is 3 with a remainder of 47.
Put 3 as the next digit of the answer. 
Result so far: 37320.693
The remainder is 47 after subtracting 2463 from 2510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Going ahead to step 12:
470 divided by 821 is 0 with a remainder of 470.
Put 0 as the next digit of the answer. 
Result so far: 37320.693
If we subtract 0 from 470, we get 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Step 13:
4700 divided by 821 is 5 with a remainder of 595.
Record the quotient 5 as the next digit in the result. 
Result so far: 37320.69305
If we subtract 4105 from 4700, we get 595.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5950, and continue the process.

On to step 14:
When dividing 5950 by 821, we get 7 with a remainder of 203.
Record the quotient 7 as the next digit in the result. 
Result so far: 37320.693057
Subtracting 5747 from 5950 leaves us with 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

Advancing to step 15:
The number 821 fits into 2030 2 times, leaving a remainder of 388.
Write down 2 as next digit of the result. 
Result so far: 37320.6930572
Subtract 1642 from 2030 to get 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

Moving on to step 16:
821 can be fit into 3880 4 times, resulting in a remainder of 596.
Put 4 as the next digit of the answer. 
Result so far: 37320.69305724
If we subtract 3284 from 3880, we get 596.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

In conclusion, the division gives 37320.69305724 with a balance of 5.96e-07.