753318 ÷ 21 
Our goal is to divide 753318 by 21.

Going ahead to step 1:
The number 21 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Append the next digit (5) from the dividend to 7 and continue with: 75 / 21

Going ahead to step 2:
21 can be fit into 75 3 times, resulting in a remainder of 12.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 63 from 75, we get 12.
Bring next digit (3) of the dividend behind the 12 and repeat the process: 123 / 21

Step 3:
21 goes into 123 5 times with a remainder of 18.
Write down 5 as next digit of the result. 
Result so far: 35.0
Subtracting 105 from 123 leaves us with 18.
Take the next digit (3) from the dividend and append it to 18, then repeat: 183 / 21

Going ahead to step 4:
21 goes into 183 8 times with a remainder of 15.
Use 8 as the next digit of our solution. 
Result so far: 358.0
If we subtract 168 from 183, we get 15.
Take the next digit (1) from the dividend and append it to 15, then repeat: 151 / 21

Moving on to step 5:
21 can be fit into 151 7 times, resulting in a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 3587.0
If we subtract 147 from 151, we get 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 21

Going ahead to step 6:
The number 21 fits into 48 2 times, leaving a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 35872.0
If we subtract 42 from 48, 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 7:
When dividing 60 by 21, we get 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 35872.2
Subtract 42 from 60 to 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 8:
If we divide 180 by 21, we get 8 and a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 35872.28
The remainder is 12 after subtracting 168 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

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: 35872.285
Subtracting 105 from 120 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 10:
21 goes into 150 7 times with a remainder of 3.
The next digit of our result is 7. 
Result so far: 35872.2857
Subtract 147 from 150 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 11:
If we divide 30 by 21, we get 1 and a remainder of 9.
The next digit of our result is 1. 
Result so far: 35872.28571
If we subtract 21 from 30, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 12:
21 goes into 90 4 times with a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 35872.285714
If we take 84 away from 90, we end up 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.

Advancing to step 13:
When dividing 60 by 21, we get 2 with a remainder of 18.
Put 2 as the next digit of the answer. 
Result so far: 35872.2857142
Deduct 42 from 60 and we're left 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.

Advancing to step 14:
180 divided by 21 is 8 with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 35872.28571428
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.

The quotient of the division is 35872.28571428, and the remainder is 1.2e-08.