20899 ÷ 83 
We want to figure out the number of times 20899 can be divided by 83.

On to step 1:
The number 83 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 83

On to step 2:
If we divide 20 by 83, we get 0 and a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Fetch the next digit (8) from the dividend, attach it to 20 and continue: 208 / 83

On to step 3:
83 goes into 208 2 times with a remainder of 42.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 42 after subtracting 166 from 208.
Bring next digit (9) of the dividend behind the 42 and repeat the process: 429 / 83

Let's proceed to step 4:
When dividing 429 by 83, we get 5 with a remainder of 14.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
Deduct 415 from 429 and we're left with 14.
Take the next digit (9) from the dividend and append it to 14, then repeat: 149 / 83

Step 5:
When dividing 149 by 83, we get 1 with a remainder of 66.
Use 1 as the next digit of our solution. 
Result so far: 251.0
Subtracting 83 from 149 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 6:
If we divide 660 by 83, we get 7 and a remainder of 79.
Use 7 as the next digit of our solution. 
Result so far: 251.7
Subtract 581 from 660 to get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Let's proceed to step 7:
The number 83 fits into 790 9 times, leaving a remainder of 43.
Write down 9 as next digit of the result. 
Result so far: 251.79
If we subtract 747 from 790, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 8:
If we divide 430 by 83, we get 5 and a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 251.795
If we subtract 415 from 430, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 9:
83 can be fit into 150 1 times, resulting in a remainder of 67.
Use 1 as the next digit of our solution. 
Result so far: 251.7951
Deduct 83 from 150 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Advancing to step 10:
670 divided by 83 is 8 with a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 251.79518
If we subtract 664 from 670, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 11:
83 goes into 60 0 times with a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 251.79518
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 12:
600 divided by 83 is 7 with a remainder of 19.
The next digit of our result is 7. 
Result so far: 251.7951807
Subtract 581 from 600 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 13:
When dividing 190 by 83, we get 2 with a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 251.79518072
If we take 166 away from 190, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

After the division, we end up with 251.79518072 and a remainder of 2.4e-08.