We're dividing 755418 by 21 
Our goal is to divide 755418 by 21.

On to step 1:
21 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (5) from the dividend, attach it to 7 and continue: 75 / 21

Going ahead to step 2:
21 goes into 75 3 times with a remainder of 12.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we subtract 63 from 75, we get 12.
Take the next digit (5) from the dividend and append it to 12, then repeat: 125 / 21

Moving on to step 3:
If we divide 125 by 21, we get 5 and a remainder of 20.
The next digit of our result is 5. 
Result so far: 35.0
Subtract 105 from 125 to get 20.
Bring next digit (4) of the dividend behind the 20 and repeat the process: 204 / 21

Moving on to step 4:
204 divided by 21 is 9 with a remainder of 15.
Record the quotient 9 as the next digit in the result. 
Result so far: 359.0
If we take 189 away from 204, we end up with 15.
Append the next digit (1) from the dividend to 15 and continue with: 151 / 21

Advancing to step 5:
If we divide 151 by 21, we get 7 and a remainder of 4.
The next digit of our result is 7. 
Result so far: 3597.0
Subtract 147 from 151 to get 4.
Append the next digit (8) from the dividend to 4 and continue with: 48 / 21

On to step 6:
The number 21 fits into 48 2 times, leaving a remainder of 6.
Write down 2 as next digit of the result. 
Result so far: 35972.0
Deduct 42 from 48 and we're left 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.

Moving on to step 7:
The number 21 fits into 60 2 times, leaving a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 35972.2
Subtracting 42 from 60 leaves us 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.

Let's proceed to step 8:
The number 21 fits into 180 8 times, leaving a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 35972.28
If we take 168 away from 180, we end up 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 9:
When dividing 120 by 21, we get 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 35972.285
If we subtract 105 from 120, we 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 10:
21 goes into 150 7 times with a remainder of 3.
Record the quotient 7 as the next digit in the result. 
Result so far: 35972.2857
Subtracting 147 from 150 leaves us 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.

Advancing to step 11:
21 can be fit into 30 1 times, resulting in a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 35972.28571
Deduct 21 from 30 and we're left with 9.
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 12:
21 goes into 90 4 times with a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 35972.285714
The remainder is 6 after subtracting 84 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 13:
21 goes into 60 2 times with a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 35972.2857142
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.

Moving on to step 14:
21 goes into 180 8 times with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 35972.28571428
Subtracting 168 from 180 leaves us 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.

In conclusion, the division gives 35972.28571428 with a balance of 1.2e-08.