We look at the division of 64864101 by 810 
Let's see how many times 810 fits into 64864101.

Going ahead to step 1:
6 divided by 810 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 810

Let's proceed to step 2:
810 can be fit into 64 0 times, resulting in a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Fetch the next digit (8) from the dividend, attach it to 64 and continue: 648 / 810

Advancing to step 3:
When dividing 648 by 810, we get 0 with a remainder of 648.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 648 to get 648.
Take the next digit (6) from the dividend and append it to 648, then repeat: 6486 / 810

Step 4:
810 goes into 6486 8 times with a remainder of 6.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 6480 from 6486 leaves us with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 810

Moving on to step 5:
810 goes into 64 0 times with a remainder of 64.
The next digit of our result is 0. 
Result so far: 80.0
If we subtract 0 from 64, we get 64.
Grab the next digit (1) from the dividend, add it to 64, then carry on: 641 / 810

Going ahead to step 6:
641 divided by 810 is 0 with a remainder of 641.
Put 0 as the next digit of the answer. 
Result so far: 800.0
If we subtract 0 from 641, we get 641.
Bring next digit (0) of the dividend behind the 641 and repeat the process: 6410 / 810

Let's proceed to step 7:
810 can be fit into 6410 7 times, resulting in a remainder of 740.
Write down 7 as next digit of the result. 
Result so far: 8007.0
If we take 5670 away from 6410, we end up with 740.
Fetch the next digit (1) from the dividend, attach it to 740 and continue: 7401 / 810

Step 8:
810 goes into 7401 9 times with a remainder of 111.
Put 9 as the next digit of the answer. 
Result so far: 80079.0
The remainder is 111 after subtracting 7290 from 7401.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1110, and continue the process.

On to step 9:
If we divide 1110 by 810, we get 1 and a remainder of 300.
Put 1 as the next digit of the answer. 
Result so far: 80079.1
Subtract 810 from 1110 to get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Going ahead to step 10:
3000 divided by 810 is 3 with a remainder of 570.
Record the quotient 3 as the next digit in the result. 
Result so far: 80079.13
Deduct 2430 from 3000 and we're left with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Going ahead to step 11:
810 goes into 5700 7 times with a remainder of 30.
Record the quotient 7 as the next digit in the result. 
Result so far: 80079.137
The remainder is 30 after subtracting 5670 from 5700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 12:
If we divide 300 by 810, we get 0 and a remainder of 300.
The number 0 becomes the next digit in our result. 
Result so far: 80079.137
If we subtract 0 from 300, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Let's proceed to step 13:
810 can be fit into 3000 3 times, resulting in a remainder of 570.
Record the quotient 3 as the next digit in the result. 
Result so far: 80079.13703
Subtracting 2430 from 3000 leaves us with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Step 14:
The number 810 fits into 5700 7 times, leaving a remainder of 30.
Write down 7 as next digit of the result. 
Result so far: 80079.137037
The remainder is 30 after subtracting 5670 from 5700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 15:
When dividing 300 by 810, we get 0 with a remainder of 300.
The next digit of our result is 0. 
Result so far: 80079.137037
The remainder is 300 after subtracting 0 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Moving on to step 16:
810 can be fit into 3000 3 times, resulting in a remainder of 570.
Record the quotient 3 as the next digit in the result. 
Result so far: 80079.13703703
Deduct 2430 from 3000 and we're left with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

The final result is 80079.13703703 with a remainder of 5.7e-07.