432211 ÷ 21 
We want to figure out the number of times 432211 can be divided by 21.

Let's proceed to step 1:
21 goes into 4 0 times with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 21

Going ahead to step 2:
21 can be fit into 43 2 times, resulting in a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 1 after subtracting 42 from 43.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 21

Let's proceed to step 3:
The number 21 fits into 12 0 times, leaving a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
Subtract 0 from 12 to get 12.
Append the next digit (2) from the dividend to 12 and continue with: 122 / 21

Let's proceed to step 4:
If we divide 122 by 21, we get 5 and a remainder of 17.
Write down 5 as next digit of the result. 
Result so far: 205.0
Subtracting 105 from 122 leaves us with 17.
Append the next digit (1) from the dividend to 17 and continue with: 171 / 21

On to step 5:
When dividing 171 by 21, we get 8 with a remainder of 3.
Write down 8 as next digit of the result. 
Result so far: 2058.0
Subtracting 168 from 171 leaves us with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 21

Step 6:
The number 21 fits into 31 1 times, leaving a remainder of 10.
Write down 1 as next digit of the result. 
Result so far: 20581.0
Deduct 21 from 31 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 7:
100 divided by 21 is 4 with a remainder of 16.
The next digit of our result is 4. 
Result so far: 20581.4
If we subtract 84 from 100, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 8:
When dividing 160 by 21, we get 7 with a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 20581.47
Subtracting 147 from 160 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 9:
130 divided by 21 is 6 with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 20581.476
Deduct 126 from 130 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 10:
21 can be fit into 40 1 times, resulting in a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 20581.4761
Subtract 21 from 40 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.

On to step 11:
The number 21 fits into 190 9 times, leaving a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 20581.47619
Subtract 189 from 190 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 12:
10 divided by 21 is 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 20581.47619
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 13:
21 goes into 100 4 times with a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 20581.4761904
Subtracting 84 from 100 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 14:
160 divided by 21 is 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 20581.47619047
Subtracting 147 from 160 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

The quotient of the division is 20581.47619047, and the remainder is 1.3e-08.