199856 ÷ 21 
We want to figure out the number of times 199856 can be divided by 21.

Step 1:
21 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 21

Advancing to step 2:
19 divided by 21 is 0 with a remainder of 19.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 19 after subtracting 0 from 19.
Include the next digit (9) from the dividend after 19, then repeat: 199 / 21

Advancing to step 3:
The number 21 fits into 199 9 times, leaving a remainder of 10.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
The remainder is 10 after subtracting 189 from 199.
Fetch the next digit (8) from the dividend, attach it to 10 and continue: 108 / 21

Going ahead to step 4:
21 can be fit into 108 5 times, resulting in a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 95.0
Subtract 105 from 108 to get 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 21

Let's proceed to step 5:
The number 21 fits into 35 1 times, leaving a remainder of 14.
The next digit of our result is 1. 
Result so far: 951.0
If we take 21 away from 35, we end up with 14.
Bring next digit (6) of the dividend behind the 14 and repeat the process: 146 / 21

Advancing to step 6:
21 goes into 146 6 times with a remainder of 20.
Use 6 as the next digit of our solution. 
Result so far: 9516.0
If we subtract 126 from 146, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 7:
21 can be fit into 200 9 times, resulting in a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 9516.9
Subtract 189 from 200 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 8:
21 can be fit into 110 5 times, resulting in a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 9516.95
The remainder is 5 after subtracting 105 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 9:
When dividing 50 by 21, we get 2 with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 9516.952
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
When dividing 80 by 21, we get 3 with a remainder of 17.
The next digit of our result is 3. 
Result so far: 9516.9523
Subtracting 63 from 80 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 11:
If we divide 170 by 21, we get 8 and a remainder of 2.
The next digit of our result is 8. 
Result so far: 9516.95238
The remainder is 2 after subtracting 168 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 12:
21 goes into 20 0 times with a remainder of 20.
The next digit of our result is 0. 
Result so far: 9516.95238
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 13:
200 divided by 21 is 9 with a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 9516.9523809
If we subtract 189 from 200, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 14:
110 divided by 21 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 9516.95238095
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The quotient of the division is 9516.95238095, and the remainder is 5e-09.