334737 ÷ 21 
Let's see how many times 21 fits into 334737.

On to step 1:
21 goes into 3 0 times with 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.
Append the next digit (3) from the dividend to 3 and continue with: 33 / 21

Let's proceed to step 2:
33 divided by 21 is 1 with a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 21 from 33 leaves us with 12.
Take the next digit (4) from the dividend and append it to 12, then repeat: 124 / 21

Step 3:
When dividing 124 by 21, we get 5 with a remainder of 19.
Write down 5 as next digit of the result. 
Result so far: 15.0
Deduct 105 from 124 and we're left with 19.
Take the next digit (7) from the dividend and append it to 19, then repeat: 197 / 21

Let's proceed to step 4:
The number 21 fits into 197 9 times, leaving a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 159.0
Deduct 189 from 197 and we're left with 8.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 21

Advancing to step 5:
83 divided by 21 is 3 with a remainder of 20.
Record the quotient 3 as the next digit in the result. 
Result so far: 1593.0
If we take 63 away from 83, we end up with 20.
Take the next digit (7) from the dividend and append it to 20, then repeat: 207 / 21

Step 6:
207 divided by 21 is 9 with a remainder of 18.
Write down 9 as next digit of the result. 
Result so far: 15939.0
If we subtract 189 from 207, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 7:
21 can be fit into 180 8 times, resulting in a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 15939.8
If we subtract 168 from 180, we 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 8:
The number 21 fits into 120 5 times, leaving a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 15939.85
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.

Step 9:
When dividing 150 by 21, we get 7 with a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 15939.857
The remainder is 3 after subtracting 147 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 10:
30 divided by 21 is 1 with a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 15939.8571
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.

Let's proceed to step 11:
When dividing 90 by 21, we get 4 with a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 15939.85714
If we subtract 84 from 90, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 12:
60 divided by 21 is 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 15939.857142
If we subtract 42 from 60, we get 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 13:
If we divide 180 by 21, we get 8 and a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 15939.8571428
Deduct 168 from 180 and we're left with 12.
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 14:
21 can be fit into 120 5 times, resulting in a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 15939.85714285
The remainder is 15 after subtracting 105 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Our division results in 15939.85714285 with a remaining 1.5e-08.