We look at the division of 15347702 by 21 
We want to divide 15347702 by 21.

Going ahead to step 1:
1 divided by 21 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 21

Let's proceed to step 2:
If we divide 15 by 21, we get 0 and a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Take the next digit (3) from the dividend and append it to 15, then repeat: 153 / 21

Moving on to step 3:
When dividing 153 by 21, we get 7 with a remainder of 6.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 147 from 153, we get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 21

On to step 4:
The number 21 fits into 64 3 times, leaving a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 73.0
Subtract 63 from 64 to get 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 21

Step 5:
17 divided by 21 is 0 with a remainder of 17.
Write down 0 as next digit of the result. 
Result so far: 730.0
Deduct 0 from 17 and we're left with 17.
Grab the next digit (7) from the dividend, add it to 17, then carry on: 177 / 21

Let's proceed to step 6:
The number 21 fits into 177 8 times, leaving a remainder of 9.
The number 8 becomes the next digit in our result. 
Result so far: 7308.0
If we take 168 away from 177, we end up with 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 21

On to step 7:
The number 21 fits into 90 4 times, leaving a remainder of 6.
The next digit of our result is 4. 
Result so far: 73084.0
If we take 84 away from 90, we end up with 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 21

Moving on to step 8:
When dividing 62 by 21, we get 2 with a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 730842.0
Subtracting 42 from 62 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.

Let's proceed to step 9:
The number 21 fits into 200 9 times, leaving a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 730842.9
The remainder is 11 after subtracting 189 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 10:
If we divide 110 by 21, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 730842.95
Deduct 105 from 110 and we're left 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.

Going ahead to step 11:
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: 730842.952
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.

Advancing to step 12:
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: 730842.9523
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.

Advancing to step 13:
21 goes into 170 8 times with a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 730842.95238
Subtracting 168 from 170 leaves us 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.

On to step 14:
If we divide 20 by 21, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 730842.95238
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.

Advancing to step 15:
21 goes into 200 9 times with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 730842.9523809
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.

Moving on to step 16:
The number 21 fits into 110 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 730842.95238095
Subtract 105 from 110 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

In conclusion, the division gives 730842.95238095 with a balance of 5e-09.