753416 ÷ 21 
We want to figure out the number of times 753416 can be divided by 21.

Moving on to step 1:
The number 21 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (5) from the dividend, attach it to 7 and continue: 75 / 21

Let's proceed to step 2:
75 divided by 21 is 3 with a remainder of 12.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 63 from 75 and we're left with 12.
Grab the next digit (3) from the dividend, add it to 12, then carry on: 123 / 21

Advancing to step 3:
If we divide 123 by 21, we get 5 and a remainder of 18.
Record the quotient 5 as the next digit in the result. 
Result so far: 35.0
Deduct 105 from 123 and we're left with 18.
Fetch the next digit (4) from the dividend, attach it to 18 and continue: 184 / 21

On to step 4:
21 can be fit into 184 8 times, resulting in a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 358.0
The remainder is 16 after subtracting 168 from 184.
Append the next digit (1) from the dividend to 16 and continue with: 161 / 21

Going ahead to step 5:
The number 21 fits into 161 7 times, leaving a remainder of 14.
Use 7 as the next digit of our solution. 
Result so far: 3587.0
If we take 147 away from 161, we end up with 14.
Fetch the next digit (6) from the dividend, attach it to 14 and continue: 146 / 21

Going ahead to step 6:
146 divided by 21 is 6 with a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 35876.0
The remainder is 20 after subtracting 126 from 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 7:
200 divided by 21 is 9 with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 35876.9
Deduct 189 from 200 and we're left 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.

Going ahead to step 8:
21 goes into 110 5 times with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 35876.95
If we take 105 away from 110, we end up 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.

Step 9:
When dividing 50 by 21, we get 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 35876.952
If we subtract 42 from 50, we get 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 10:
80 divided by 21 is 3 with a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 35876.9523
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.

Let's proceed to step 11:
21 goes into 170 8 times with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 35876.95238
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.

On to step 12:
If we divide 20 by 21, we get 0 and a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 35876.95238
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.

Moving on to step 13:
The number 21 fits into 200 9 times, leaving a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 35876.9523809
Subtract 189 from 200 to 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.

Moving on to step 14:
110 divided by 21 is 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 35876.95238095
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 35876.95238095 with a balance of 5e-09.