66627856 ÷ 810 
Let's see how many times 810 fits into 66627856.

Going ahead to step 1:
If we divide 6 by 810, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 810

On to step 2:
810 can be fit into 66 0 times, resulting in a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Append the next digit (6) from the dividend to 66 and continue with: 666 / 810

On to step 3:
The number 810 fits into 666 0 times, leaving a remainder of 666.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 666, we end up with 666.
Include the next digit (2) from the dividend after 666, then repeat: 6662 / 810

Advancing to step 4:
When dividing 6662 by 810, we get 8 with a remainder of 182.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtract 6480 from 6662 to get 182.
Include the next digit (7) from the dividend after 182, then repeat: 1827 / 810

Going ahead to step 5:
When dividing 1827 by 810, we get 2 with a remainder of 207.
Record the quotient 2 as the next digit in the result. 
Result so far: 82.0
The remainder is 207 after subtracting 1620 from 1827.
Fetch the next digit (8) from the dividend, attach it to 207 and continue: 2078 / 810

On to step 6:
2078 divided by 810 is 2 with a remainder of 458.
The next digit of our result is 2. 
Result so far: 822.0
Subtract 1620 from 2078 to get 458.
Append the next digit (5) from the dividend to 458 and continue with: 4585 / 810

On to step 7:
810 can be fit into 4585 5 times, resulting in a remainder of 535.
The next digit of our result is 5. 
Result so far: 8225.0
The remainder is 535 after subtracting 4050 from 4585.
Append the next digit (6) from the dividend to 535 and continue with: 5356 / 810

Going ahead to step 8:
If we divide 5356 by 810, we get 6 and a remainder of 496.
The next digit of our result is 6. 
Result so far: 82256.0
Subtracting 4860 from 5356 leaves us with 496.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4960, and continue the process.

Advancing to step 9:
If we divide 4960 by 810, we get 6 and a remainder of 100.
Put 6 as the next digit of the answer. 
Result so far: 82256.6
If we subtract 4860 from 4960, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 10:
If we divide 1000 by 810, we get 1 and a remainder of 190.
The next digit of our result is 1. 
Result so far: 82256.61
Subtracting 810 from 1000 leaves us with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Let's proceed to step 11:
When dividing 1900 by 810, we get 2 with a remainder of 280.
Use 2 as the next digit of our solution. 
Result so far: 82256.612
Subtract 1620 from 1900 to get 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Let's proceed to step 12:
The number 810 fits into 2800 3 times, leaving a remainder of 370.
The number 3 becomes the next digit in our result. 
Result so far: 82256.6123
Deduct 2430 from 2800 and we're left with 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Let's proceed to step 13:
If we divide 3700 by 810, we get 4 and a remainder of 460.
Use 4 as the next digit of our solution. 
Result so far: 82256.61234
If we take 3240 away from 3700, we end up with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Let's proceed to step 14:
If we divide 4600 by 810, we get 5 and a remainder of 550.
The next digit of our result is 5. 
Result so far: 82256.612345
Deduct 4050 from 4600 and we're left with 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Going ahead to step 15:
When dividing 5500 by 810, we get 6 with a remainder of 640.
The next digit of our result is 6. 
Result so far: 82256.6123456
If we take 4860 away from 5500, we end up with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Step 16:
810 can be fit into 6400 7 times, resulting in a remainder of 730.
Use 7 as the next digit of our solution. 
Result so far: 82256.61234567
If we subtract 5670 from 6400, we get 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7300, and continue the process.

The final outcome is 82256.61234567, with a leftover of 7.3e-07.