We divide 354933 by 21
Let's see how many times 21 fits into 354933.

On to step 1:
21 can be fit into 3 0 times, resulting in a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 21

Step 2:
21 can be fit into 35 1 times, resulting in a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 21 away from 35, we end up with 14.
Grab the next digit (4) from the dividend, add it to 14, then carry on: 144 / 21

On to step 3:
When dividing 144 by 21, we get 6 with a remainder of 18.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we take 126 away from 144, we end up with 18.
Include the next digit (9) from the dividend after 18, then repeat: 189 / 21

Moving on to step 4:
189 divided by 21 is 9 with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 169.0
Subtracting 189 from 189 leaves us with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 21

Step 5:
If we divide 3 by 21, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 1690.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (3) from the dividend, attach it to 3 and continue: 33 / 21

Going ahead to step 6:
If we divide 33 by 21, we get 1 and a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 16901.0
The remainder is 12 after subtracting 21 from 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 7:
If we divide 120 by 21, we get 5 and a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 16901.5
If we take 105 away from 120, we end up with 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 8:
The number 21 fits into 150 7 times, leaving a remainder of 3.
The next digit of our result is 7. 
Result so far: 16901.57
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 9:
If we divide 30 by 21, we get 1 and a remainder of 9.
The next digit of our result is 1. 
Result so far: 16901.571
The remainder is 9 after subtracting 21 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 10:
21 goes into 90 4 times with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 16901.5714
Subtracting 84 from 90 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 11:
The number 21 fits into 60 2 times, leaving a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 16901.57142
If we take 42 away from 60, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 12:
180 divided by 21 is 8 with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 16901.571428
Subtract 168 from 180 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 13:
When dividing 120 by 21, we get 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 16901.5714285
Subtract 105 from 120 to 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 14:
21 goes into 150 7 times with a remainder of 3.
The next digit of our result is 7. 
Result so far: 16901.57142857
If we take 147 away from 150, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Our division results in 16901.57142857 with a remaining 3e-09.