We divide 434099 by 21
Let's see how many times 21 fits into 434099.

Let's proceed to step 1:
The number 21 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 21

Advancing to step 2:
When dividing 43 by 21, we get 2 with a remainder of 1.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 42 from 43 and we're left with 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 21

Advancing to step 3:
When dividing 14 by 21, we get 0 with a remainder of 14.
Put 0 as the next digit of the answer. 
Result so far: 20.0
The remainder is 14 after subtracting 0 from 14.
Bring next digit (0) of the dividend behind the 14 and repeat the process: 140 / 21

Moving on to step 4:
21 can be fit into 140 6 times, resulting in a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 206.0
Deduct 126 from 140 and we're left with 14.
Append the next digit (9) from the dividend to 14 and continue with: 149 / 21

Step 5:
21 goes into 149 7 times with a remainder of 2.
The next digit of our result is 7. 
Result so far: 2067.0
If we take 147 away from 149, we end up with 2.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 21

Going ahead to step 6:
When dividing 29 by 21, we get 1 with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 20671.0
Subtract 21 from 29 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 7:
The number 21 fits into 80 3 times, leaving a remainder of 17.
The next digit of our result is 3. 
Result so far: 20671.3
Deduct 63 from 80 and we're left 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.

Let's proceed to step 8:
21 can be fit into 170 8 times, resulting in a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 20671.38
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.

Step 9:
21 can be fit into 20 0 times, resulting in a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 20671.38
If we take 0 away from 20, we end up 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.

On to step 10:
The number 21 fits into 200 9 times, leaving a remainder of 11.
Use 9 as the next digit of our solution. 
Result so far: 20671.3809
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.

Moving on to step 11:
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: 20671.38095
If we take 105 away from 110, we end up 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.

Advancing to step 12:
If we divide 50 by 21, we get 2 and a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 20671.380952
Deduct 42 from 50 and we're left 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.

On to step 13:
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: 20671.3809523
The remainder is 17 after subtracting 63 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 14:
170 divided by 21 is 8 with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 20671.38095238
Deduct 168 from 170 and we're left 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.

The quotient of the division is 20671.38095238, and the remainder is 2e-09.