We look at the division of 754672 by 21 
Let's see how many times 21 fits into 754672.

Step 1:
When dividing 7 by 21, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 21

Step 2:
21 goes into 75 3 times with a remainder of 12.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we subtract 63 from 75, we get 12.
Fetch the next digit (4) from the dividend, attach it to 12 and continue: 124 / 21

Step 3:
124 divided by 21 is 5 with a remainder of 19.
Put 5 as the next digit of the answer. 
Result so far: 35.0
Subtracting 105 from 124 leaves us with 19.
Grab the next digit (6) from the dividend, add it to 19, then carry on: 196 / 21

Advancing to step 4:
21 goes into 196 9 times with a remainder of 7.
Use 9 as the next digit of our solution. 
Result so far: 359.0
If we take 189 away from 196, we end up with 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 21

On to step 5:
If we divide 77 by 21, we get 3 and a remainder of 14.
Write down 3 as next digit of the result. 
Result so far: 3593.0
If we take 63 away from 77, we end up with 14.
Include the next digit (2) from the dividend after 14, then repeat: 142 / 21

Advancing to step 6:
The number 21 fits into 142 6 times, leaving a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 35936.0
Deduct 126 from 142 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 7:
160 divided by 21 is 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 35936.7
Subtract 147 from 160 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 8:
21 goes into 130 6 times with a remainder of 4.
Write down 6 as next digit of the result. 
Result so far: 35936.76
The remainder is 4 after subtracting 126 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
40 divided by 21 is 1 with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 35936.761
The remainder is 19 after subtracting 21 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 10:
190 divided by 21 is 9 with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 35936.7619
The remainder is 1 after subtracting 189 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 11:
21 can be fit into 10 0 times, resulting in a remainder of 10.
The next digit of our result is 0. 
Result so far: 35936.7619
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 12:
21 goes into 100 4 times with a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 35936.761904
If we subtract 84 from 100, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 13:
When dividing 160 by 21, we get 7 with a remainder of 13.
The next digit of our result is 7. 
Result so far: 35936.7619047
If we subtract 147 from 160, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 14:
If we divide 130 by 21, we get 6 and a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 35936.76190476
Subtract 126 from 130 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 35936.76190476, with a leftover of 4e-09.