We divide 740521 by 21
Let's see how many times 21 fits into 740521.

Step 1:
7 divided by 21 is 0 with 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.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 21

Advancing to step 2:
The number 21 fits into 74 3 times, leaving a remainder of 11.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtracting 63 from 74 leaves us with 11.
Bring next digit (0) of the dividend behind the 11 and repeat the process: 110 / 21

Advancing to step 3:
If we divide 110 by 21, we get 5 and a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 35.0
Subtract 105 from 110 to get 5.
Include the next digit (5) from the dividend after 5, then repeat: 55 / 21

Step 4:
The number 21 fits into 55 2 times, leaving a remainder of 13.
Put 2 as the next digit of the answer. 
Result so far: 352.0
If we subtract 42 from 55, we get 13.
Take the next digit (2) from the dividend and append it to 13, then repeat: 132 / 21

Advancing to step 5:
The number 21 fits into 132 6 times, leaving a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 3526.0
The remainder is 6 after subtracting 126 from 132.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 21

Let's proceed to step 6:
If we divide 61 by 21, we get 2 and a remainder of 19.
The next digit of our result is 2. 
Result so far: 35262.0
Deduct 42 from 61 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 7:
When dividing 190 by 21, we get 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 35262.9
Subtracting 189 from 190 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 8:
10 divided by 21 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 35262.9
Subtracting 0 from 10 leaves us 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.

Advancing to step 9:
If we divide 100 by 21, we get 4 and a remainder of 16.
Write down 4 as next digit of the result. 
Result so far: 35262.904
Subtract 84 from 100 to 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.

Advancing to step 10:
21 goes into 160 7 times with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 35262.9047
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.

Step 11:
If we divide 130 by 21, we get 6 and a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 35262.90476
If we take 126 away from 130, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 12:
If we divide 40 by 21, we get 1 and a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 35262.904761
Subtracting 21 from 40 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 13:
21 goes into 190 9 times with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 35262.9047619
Deduct 189 from 190 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 14:
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: 35262.9047619
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 35262.9047619, with a leftover of 1e-08.