We're dividing 770573 by 21 
We want to divide 770573 by 21.

Let's proceed 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.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 21

Going ahead to step 2:
77 divided by 21 is 3 with a remainder of 14.
The next digit of our result is 3. 
Result so far: 3.0
If we subtract 63 from 77, we get 14.
Append the next digit (0) from the dividend to 14 and continue with: 140 / 21

Going ahead to step 3:
When dividing 140 by 21, we get 6 with a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 36.0
Subtract 126 from 140 to get 14.
Bring next digit (5) of the dividend behind the 14 and repeat the process: 145 / 21

Moving on to step 4:
The number 21 fits into 145 6 times, leaving a remainder of 19.
Use 6 as the next digit of our solution. 
Result so far: 366.0
The remainder is 19 after subtracting 126 from 145.
Append the next digit (7) from the dividend to 19 and continue with: 197 / 21

Step 5:
21 goes into 197 9 times with a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 3669.0
The remainder is 8 after subtracting 189 from 197.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 21

Advancing to step 6:
83 divided by 21 is 3 with a remainder of 20.
The number 3 becomes the next digit in our result. 
Result so far: 36693.0
If we take 63 away from 83, we end up 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.

Moving on to step 7:
21 can be fit into 200 9 times, resulting in a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 36693.9
If we subtract 189 from 200, we 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.

On to step 8:
The number 21 fits into 110 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 36693.95
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.

Step 9:
50 divided by 21 is 2 with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 36693.952
Subtract 42 from 50 to 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.

Advancing to step 10:
The number 21 fits into 80 3 times, leaving a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 36693.9523
If we subtract 63 from 80, we get 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:
If we divide 170 by 21, we get 8 and a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 36693.95238
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.

On to step 12:
21 can be fit into 20 0 times, resulting in a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 36693.95238
If we subtract 0 from 20, we 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.

Going ahead to step 13:
When dividing 200 by 21, we get 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 36693.9523809
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.

Moving on to step 14:
If we divide 110 by 21, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 36693.95238095
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 36693.95238095 with a balance of 5e-09.