Let's divide 740393 by 21
We want to figure out the number of times 740393 can be divided by 21.

On to step 1:
7 divided by 21 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Include the next digit (4) from the dividend after 7, then repeat: 74 / 21

Going ahead to step 2:
21 goes into 74 3 times with a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 11 after subtracting 63 from 74.
Take the next digit (0) from the dividend and append it to 11, then repeat: 110 / 21

Going ahead to step 3:
The number 21 fits into 110 5 times, leaving a remainder of 5.
The next digit of our result is 5. 
Result so far: 35.0
If we subtract 105 from 110, we get 5.
Take the next digit (3) from the dividend and append it to 5, then repeat: 53 / 21

On to step 4:
21 goes into 53 2 times with a remainder of 11.
The number 2 becomes the next digit in our result. 
Result so far: 352.0
If we subtract 42 from 53, we get 11.
Bring next digit (9) of the dividend behind the 11 and repeat the process: 119 / 21

Going ahead to step 5:
When dividing 119 by 21, we get 5 with a remainder of 14.
Put 5 as the next digit of the answer. 
Result so far: 3525.0
If we subtract 105 from 119, we get 14.
Grab the next digit (3) from the dividend, add it to 14, then carry on: 143 / 21

On to step 6:
The number 21 fits into 143 6 times, leaving a remainder of 17.
Record the quotient 6 as the next digit in the result. 
Result so far: 35256.0
The remainder is 17 after subtracting 126 from 143.
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 7:
When dividing 170 by 21, we get 8 with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 35256.8
If we take 168 away from 170, we end up 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.

Moving on to step 8:
When dividing 20 by 21, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 35256.8
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.

Moving on to step 9:
If we divide 200 by 21, we get 9 and a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 35256.809
If we take 189 away from 200, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 10:
The number 21 fits into 110 5 times, leaving a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 35256.8095
Subtracting 105 from 110 leaves us 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.

Step 11:
50 divided by 21 is 2 with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 35256.80952
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.

Going ahead to step 12:
If we divide 80 by 21, we get 3 and a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 35256.809523
If we take 63 away from 80, we end up 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.

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: 35256.8095238
The remainder is 2 after subtracting 168 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 14:
20 divided by 21 is 0 with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 35256.8095238
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.

In conclusion, the division gives 35256.8095238 with a balance of 2e-08.