80918193 ÷ 921 
We want to figure out the number of times 80918193 can be divided by 921.

On to step 1:
The number 921 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 921

Step 2:
921 can be fit into 80 0 times, resulting in a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 80 to get 80.
Take the next digit (9) from the dividend and append it to 80, then repeat: 809 / 921

On to step 3:
The number 921 fits into 809 0 times, leaving a remainder of 809.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 809, we end up with 809.
Take the next digit (1) from the dividend and append it to 809, then repeat: 8091 / 921

Let's proceed to step 4:
When dividing 8091 by 921, we get 8 with a remainder of 723.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 7368 from 8091 and we're left with 723.
Append the next digit (8) from the dividend to 723 and continue with: 7238 / 921

Going ahead to step 5:
921 can be fit into 7238 7 times, resulting in a remainder of 791.
The next digit of our result is 7. 
Result so far: 87.0
Subtract 6447 from 7238 to get 791.
Grab the next digit (1) from the dividend, add it to 791, then carry on: 7911 / 921

Let's proceed to step 6:
The number 921 fits into 7911 8 times, leaving a remainder of 543.
Record the quotient 8 as the next digit in the result. 
Result so far: 878.0
Subtracting 7368 from 7911 leaves us with 543.
Grab the next digit (9) from the dividend, add it to 543, then carry on: 5439 / 921

Going ahead to step 7:
5439 divided by 921 is 5 with a remainder of 834.
The number 5 becomes the next digit in our result. 
Result so far: 8785.0
If we take 4605 away from 5439, we end up with 834.
Append the next digit (3) from the dividend to 834 and continue with: 8343 / 921

Step 8:
When dividing 8343 by 921, we get 9 with a remainder of 54.
Use 9 as the next digit of our solution. 
Result so far: 87859.0
Deduct 8289 from 8343 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 9:
When dividing 540 by 921, we get 0 with a remainder of 540.
Put 0 as the next digit of the answer. 
Result so far: 87859.0
Subtracting 0 from 540 leaves us with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

On to step 10:
If we divide 5400 by 921, we get 5 and a remainder of 795.
The number 5 becomes the next digit in our result. 
Result so far: 87859.05
The remainder is 795 after subtracting 4605 from 5400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7950, and continue the process.

Going ahead to step 11:
When dividing 7950 by 921, we get 8 with a remainder of 582.
The number 8 becomes the next digit in our result. 
Result so far: 87859.058
Deduct 7368 from 7950 and we're left with 582.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5820, and continue the process.

Going ahead to step 12:
5820 divided by 921 is 6 with a remainder of 294.
Write down 6 as next digit of the result. 
Result so far: 87859.0586
Subtract 5526 from 5820 to get 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

On to step 13:
The number 921 fits into 2940 3 times, leaving a remainder of 177.
Write down 3 as next digit of the result. 
Result so far: 87859.05863
The remainder is 177 after subtracting 2763 from 2940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1770, and continue the process.

Going ahead to step 14:
1770 divided by 921 is 1 with a remainder of 849.
Write down 1 as next digit of the result. 
Result so far: 87859.058631
Subtract 921 from 1770 to get 849.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8490, and continue the process.

Going ahead to step 15:
921 can be fit into 8490 9 times, resulting in a remainder of 201.
Record the quotient 9 as the next digit in the result. 
Result so far: 87859.0586319
If we take 8289 away from 8490, we end up with 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

Going ahead to step 16:
2010 divided by 921 is 2 with a remainder of 168.
Put 2 as the next digit of the answer. 
Result so far: 87859.05863192
Deduct 1842 from 2010 and we're left with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

In conclusion, the division gives 87859.05863192 with a balance of 1.68e-07.