305882 ÷ 21 
We want to figure out the number of times 305882 can be divided by 21.

Advancing to step 1:
21 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 21

Let's proceed to step 2:
21 can be fit into 30 1 times, resulting in a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 21 from 30, we get 9.
Append the next digit (5) from the dividend to 9 and continue with: 95 / 21

Step 3:
21 can be fit into 95 4 times, resulting in a remainder of 11.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
Subtracting 84 from 95 leaves us with 11.
Bring next digit (8) of the dividend behind the 11 and repeat the process: 118 / 21

Step 4:
When dividing 118 by 21, we get 5 with a remainder of 13.
Use 5 as the next digit of our solution. 
Result so far: 145.0
The remainder is 13 after subtracting 105 from 118.
Include the next digit (8) from the dividend after 13, then repeat: 138 / 21

Advancing to step 5:
The number 21 fits into 138 6 times, leaving a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 1456.0
If we take 126 away from 138, we end up with 12.
Bring next digit (2) of the dividend behind the 12 and repeat the process: 122 / 21

Let's proceed to step 6:
If we divide 122 by 21, we get 5 and a remainder of 17.
The number 5 becomes the next digit in our result. 
Result so far: 14565.0
The remainder is 17 after subtracting 105 from 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 7:
If we divide 170 by 21, we get 8 and a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 14565.8
Subtract 168 from 170 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 8:
When dividing 20 by 21, we get 0 with a remainder of 20.
The next digit of our result is 0. 
Result so far: 14565.8
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 9:
21 can be fit into 200 9 times, resulting in a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 14565.809
The remainder is 11 after subtracting 189 from 200.
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 10:
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: 14565.8095
Deduct 105 from 110 and we're left 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.

Moving on to step 11:
The number 21 fits into 50 2 times, leaving a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 14565.80952
If we take 42 away from 50, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 12:
If we divide 80 by 21, we get 3 and a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 14565.809523
If we subtract 63 from 80, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 13:
170 divided by 21 is 8 with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 14565.8095238
Subtracting 168 from 170 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 14:
When dividing 20 by 21, we get 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 14565.8095238
Subtract 0 from 20 to 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.

The final outcome is 14565.8095238, with a leftover of 2e-08.