We divide 99835879 by 820
We want to divide 99835879 by 820.

Going ahead to step 1:
When dividing 9 by 820, we get 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 820

Going ahead to step 2:
If we divide 99 by 820, we get 0 and a remainder of 99.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 99 leaves us with 99.
Append the next digit (8) from the dividend to 99 and continue with: 998 / 820

Advancing to step 3:
820 goes into 998 1 times with a remainder of 178.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 820 from 998 leaves us with 178.
Grab the next digit (3) from the dividend, add it to 178, then carry on: 1783 / 820

Moving on to step 4:
1783 divided by 820 is 2 with a remainder of 143.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Subtract 1640 from 1783 to get 143.
Grab the next digit (5) from the dividend, add it to 143, then carry on: 1435 / 820

Going ahead to step 5:
1435 divided by 820 is 1 with a remainder of 615.
The number 1 becomes the next digit in our result. 
Result so far: 121.0
If we take 820 away from 1435, we end up with 615.
Grab the next digit (8) from the dividend, add it to 615, then carry on: 6158 / 820

Step 6:
If we divide 6158 by 820, we get 7 and a remainder of 418.
Record the quotient 7 as the next digit in the result. 
Result so far: 1217.0
Subtract 5740 from 6158 to get 418.
Take the next digit (7) from the dividend and append it to 418, then repeat: 4187 / 820

Advancing to step 7:
When dividing 4187 by 820, we get 5 with a remainder of 87.
Put 5 as the next digit of the answer. 
Result so far: 12175.0
If we subtract 4100 from 4187, we get 87.
Include the next digit (9) from the dividend after 87, then repeat: 879 / 820

Going ahead to step 8:
If we divide 879 by 820, we get 1 and a remainder of 59.
The number 1 becomes the next digit in our result. 
Result so far: 121751.0
Subtracting 820 from 879 leaves us with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Moving on to step 9:
When dividing 590 by 820, we get 0 with a remainder of 590.
Put 0 as the next digit of the answer. 
Result so far: 121751.0
The remainder is 590 after subtracting 0 from 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Let's proceed to step 10:
When dividing 5900 by 820, we get 7 with a remainder of 160.
The next digit of our result is 7. 
Result so far: 121751.07
Deduct 5740 from 5900 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 11:
1600 divided by 820 is 1 with a remainder of 780.
Use 1 as the next digit of our solution. 
Result so far: 121751.071
If we subtract 820 from 1600, we get 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7800, and continue the process.

Advancing to step 12:
820 goes into 7800 9 times with a remainder of 420.
Write down 9 as next digit of the result. 
Result so far: 121751.0719
Deduct 7380 from 7800 and we're left with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Going ahead to step 13:
820 can be fit into 4200 5 times, resulting in a remainder of 100.
Record the quotient 5 as the next digit in the result. 
Result so far: 121751.07195
The remainder is 100 after subtracting 4100 from 4200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 14:
If we divide 1000 by 820, we get 1 and a remainder of 180.
The number 1 becomes the next digit in our result. 
Result so far: 121751.071951
Subtract 820 from 1000 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 15:
1800 divided by 820 is 2 with a remainder of 160.
Put 2 as the next digit of the answer. 
Result so far: 121751.0719512
Subtract 1640 from 1800 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 16:
When dividing 1600 by 820, we get 1 with a remainder of 780.
The next digit of our result is 1. 
Result so far: 121751.07195121
Subtracting 820 from 1600 leaves us with 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7800, and continue the process.

The final result is 121751.07195121 with a remainder of 7.8e-07.