775574 ÷ 21 
We want to figure out the number of times 775574 can be divided by 21.

Going ahead to step 1:
When dividing 7 by 21, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 21

Let's proceed to step 2:
21 can be fit into 77 3 times, resulting in a remainder of 14.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 63 from 77 to get 14.
Take the next digit (5) from the dividend and append it to 14, then repeat: 145 / 21

On to step 3:
21 goes into 145 6 times with a remainder of 19.
The number 6 becomes the next digit in our result. 
Result so far: 36.0
If we take 126 away from 145, we end up with 19.
Append the next digit (5) from the dividend to 19 and continue with: 195 / 21

Let's proceed to step 4:
21 can be fit into 195 9 times, resulting in a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 369.0
Subtract 189 from 195 to get 6.
Append the next digit (7) from the dividend to 6 and continue with: 67 / 21

Going ahead to step 5:
The number 21 fits into 67 3 times, leaving a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 3693.0
If we subtract 63 from 67, we get 4.
Include the next digit (4) from the dividend after 4, then repeat: 44 / 21

Going ahead to step 6:
When dividing 44 by 21, we get 2 with a remainder of 2.
The next digit of our result is 2. 
Result so far: 36932.0
The remainder is 2 after subtracting 42 from 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 7:
The number 21 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 36932.0
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
If we divide 200 by 21, we get 9 and a remainder of 11.
The next digit of our result is 9. 
Result so far: 36932.09
Subtracting 189 from 200 leaves us 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.

On to step 9:
21 goes into 110 5 times with a remainder of 5.
The next digit of our result is 5. 
Result so far: 36932.095
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 10:
21 can be fit into 50 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 36932.0952
The remainder is 8 after subtracting 42 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 11:
The number 21 fits into 80 3 times, leaving a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 36932.09523
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.

Step 12:
21 can be fit into 170 8 times, resulting in a remainder of 2.
The next digit of our result is 8. 
Result so far: 36932.095238
Deduct 168 from 170 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 13:
21 goes into 20 0 times with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 36932.095238
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 14:
The number 21 fits into 200 9 times, leaving a remainder of 11.
The next digit of our result is 9. 
Result so far: 36932.09523809
The remainder is 11 after subtracting 189 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Our division results in 36932.09523809 with a remaining 1.1e-08.