Let's divide 813621 by 64
Our goal is to divide 813621 by 64.

Step 1:
When dividing 8 by 64, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 64

Moving on to step 2:
The number 64 fits into 81 1 times, leaving a remainder of 17.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 64 from 81 to get 17.
Append the next digit (3) from the dividend to 17 and continue with: 173 / 64

Moving on to step 3:
The number 64 fits into 173 2 times, leaving a remainder of 45.
Use 2 as the next digit of our solution. 
Result so far: 12.0
Subtract 128 from 173 to get 45.
Bring next digit (6) of the dividend behind the 45 and repeat the process: 456 / 64

Let's proceed to step 4:
The number 64 fits into 456 7 times, leaving a remainder of 8.
The next digit of our result is 7. 
Result so far: 127.0
If we take 448 away from 456, we end up with 8.
Take the next digit (2) from the dividend and append it to 8, then repeat: 82 / 64

Moving on to step 5:
If we divide 82 by 64, we get 1 and a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 1271.0
Subtract 64 from 82 to get 18.
Grab the next digit (1) from the dividend, add it to 18, then carry on: 181 / 64

Let's proceed to step 6:
When dividing 181 by 64, we get 2 with a remainder of 53.
Record the quotient 2 as the next digit in the result. 
Result so far: 12712.0
The remainder is 53 after subtracting 128 from 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 7:
When dividing 530 by 64, we get 8 with a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 12712.8
Subtract 512 from 530 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 8:
If we divide 180 by 64, we get 2 and a remainder of 52.
The number 2 becomes the next digit in our result. 
Result so far: 12712.82
If we take 128 away from 180, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 9:
520 divided by 64 is 8 with a remainder of 8.
Record the quotient 8 as the next digit in the result. 
Result so far: 12712.828
If we subtract 512 from 520, 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.

Going ahead to step 10:
The number 64 fits into 80 1 times, leaving a remainder of 16.
Record the quotient 1 as the next digit in the result. 
Result so far: 12712.8281
Subtract 64 from 80 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.

On to step 11:
If we divide 160 by 64, we get 2 and a remainder of 32.
The number 2 becomes the next digit in our result. 
Result so far: 12712.82812
The remainder is 32 after subtracting 128 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 12:
If we divide 320 by 64, we get 5 and a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 12712.828125
If we subtract 320 from 320, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 13:
If we divide 0 by 64, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 12712.828125
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 14:
64 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 12712.828125
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 12712.828125, and the remainder is 0.0.