We look at the division of 715835 by 21 
We want to divide 715835 by 21.

Let's proceed to step 1:
When dividing 7 by 21, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 21

Moving on to step 2:
If we divide 71 by 21, we get 3 and a remainder of 8.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 63 from 71 leaves us with 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 21

Advancing to step 3:
21 goes into 85 4 times with a remainder of 1.
Write down 4 as next digit of the result. 
Result so far: 34.0
The remainder is 1 after subtracting 84 from 85.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 21

Going ahead to step 4:
When dividing 18 by 21, we get 0 with a remainder of 18.
Put 0 as the next digit of the answer. 
Result so far: 340.0
Deduct 0 from 18 and we're left with 18.
Append the next digit (3) from the dividend to 18 and continue with: 183 / 21

Advancing to step 5:
21 goes into 183 8 times with a remainder of 15.
The next digit of our result is 8. 
Result so far: 3408.0
If we subtract 168 from 183, we get 15.
Append the next digit (5) from the dividend to 15 and continue with: 155 / 21

Advancing to step 6:
When dividing 155 by 21, we get 7 with a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 34087.0
Subtracting 147 from 155 leaves us 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.

Step 7:
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: 34087.3
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.

Moving on to step 8:
21 can be fit into 170 8 times, resulting in a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 34087.38
If we subtract 168 from 170, we 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.

Let's proceed to step 9:
If we divide 20 by 21, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 34087.38
The remainder is 20 after subtracting 0 from 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:
21 can be fit into 200 9 times, resulting in a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 34087.3809
If we subtract 189 from 200, we 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.

Advancing to step 11:
When dividing 110 by 21, we get 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 34087.38095
The remainder is 5 after subtracting 105 from 110.
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:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 34087.380952
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.

Advancing to step 13:
The number 21 fits into 80 3 times, leaving a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 34087.3809523
Subtract 63 from 80 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 14:
21 goes into 170 8 times with a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 34087.38095238
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.

In conclusion, the division gives 34087.38095238 with a balance of 2e-09.