64911866 ÷ 815 
We want to divide 64911866 by 815.

Going ahead to step 1:
815 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 815

Going ahead to step 2:
The number 815 fits into 64 0 times, leaving a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Append the next digit (9) from the dividend to 64 and continue with: 649 / 815

Advancing to step 3:
The number 815 fits into 649 0 times, leaving a remainder of 649.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 649 leaves us with 649.
Bring next digit (1) of the dividend behind the 649 and repeat the process: 6491 / 815

Advancing to step 4:
6491 divided by 815 is 7 with a remainder of 786.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Deduct 5705 from 6491 and we're left with 786.
Bring next digit (1) of the dividend behind the 786 and repeat the process: 7861 / 815

Let's proceed to step 5:
815 goes into 7861 9 times with a remainder of 526.
Write down 9 as next digit of the result. 
Result so far: 79.0
The remainder is 526 after subtracting 7335 from 7861.
Fetch the next digit (8) from the dividend, attach it to 526 and continue: 5268 / 815

Step 6:
The number 815 fits into 5268 6 times, leaving a remainder of 378.
Use 6 as the next digit of our solution. 
Result so far: 796.0
If we subtract 4890 from 5268, we get 378.
Bring next digit (6) of the dividend behind the 378 and repeat the process: 3786 / 815

Let's proceed to step 7:
815 can be fit into 3786 4 times, resulting in a remainder of 526.
Write down 4 as next digit of the result. 
Result so far: 7964.0
The remainder is 526 after subtracting 3260 from 3786.
Include the next digit (6) from the dividend after 526, then repeat: 5266 / 815

Moving on to step 8:
5266 divided by 815 is 6 with a remainder of 376.
Use 6 as the next digit of our solution. 
Result so far: 79646.0
The remainder is 376 after subtracting 4890 from 5266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

Let's proceed to step 9:
815 goes into 3760 4 times with a remainder of 500.
The next digit of our result is 4. 
Result so far: 79646.4
Subtracting 3260 from 3760 leaves us with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Moving on to step 10:
815 goes into 5000 6 times with a remainder of 110.
Use 6 as the next digit of our solution. 
Result so far: 79646.46
Subtracting 4890 from 5000 leaves us with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Moving on to step 11:
815 can be fit into 1100 1 times, resulting in a remainder of 285.
The next digit of our result is 1. 
Result so far: 79646.461
The remainder is 285 after subtracting 815 from 1100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

On to step 12:
815 can be fit into 2850 3 times, resulting in a remainder of 405.
The next digit of our result is 3. 
Result so far: 79646.4613
If we subtract 2445 from 2850, we get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Let's proceed to step 13:
815 can be fit into 4050 4 times, resulting in a remainder of 790.
The number 4 becomes the next digit in our result. 
Result so far: 79646.46134
Subtract 3260 from 4050 to get 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7900, and continue the process.

Going ahead to step 14:
When dividing 7900 by 815, we get 9 with a remainder of 565.
Record the quotient 9 as the next digit in the result. 
Result so far: 79646.461349
The remainder is 565 after subtracting 7335 from 7900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5650, and continue the process.

Advancing to step 15:
The number 815 fits into 5650 6 times, leaving a remainder of 760.
The next digit of our result is 6. 
Result so far: 79646.4613496
The remainder is 760 after subtracting 4890 from 5650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Step 16:
815 can be fit into 7600 9 times, resulting in a remainder of 265.
Use 9 as the next digit of our solution. 
Result so far: 79646.46134969
Subtracting 7335 from 7600 leaves us with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

After the division, we end up with 79646.46134969 and a remainder of 2.65e-07.