66156577 ÷ 811 
We want to figure out the number of times 66156577 can be divided by 811.

Let's proceed to step 1:
811 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 811

On to step 2:
811 goes into 66 0 times with a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Grab the next digit (1) from the dividend, add it to 66, then carry on: 661 / 811

Advancing to step 3:
811 can be fit into 661 0 times, resulting in a remainder of 661.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 661 leaves us with 661.
Include the next digit (5) from the dividend after 661, then repeat: 6615 / 811

Let's proceed to step 4:
If we divide 6615 by 811, we get 8 and a remainder of 127.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Deduct 6488 from 6615 and we're left with 127.
Include the next digit (6) from the dividend after 127, then repeat: 1276 / 811

Let's proceed to step 5:
The number 811 fits into 1276 1 times, leaving a remainder of 465.
Write down 1 as next digit of the result. 
Result so far: 81.0
Deduct 811 from 1276 and we're left with 465.
Append the next digit (5) from the dividend to 465 and continue with: 4655 / 811

Advancing to step 6:
The number 811 fits into 4655 5 times, leaving a remainder of 600.
Put 5 as the next digit of the answer. 
Result so far: 815.0
If we subtract 4055 from 4655, we get 600.
Bring next digit (7) of the dividend behind the 600 and repeat the process: 6007 / 811

Step 7:
811 goes into 6007 7 times with a remainder of 330.
Use 7 as the next digit of our solution. 
Result so far: 8157.0
Deduct 5677 from 6007 and we're left with 330.
Include the next digit (7) from the dividend after 330, then repeat: 3307 / 811

Going ahead to step 8:
811 goes into 3307 4 times with a remainder of 63.
Put 4 as the next digit of the answer. 
Result so far: 81574.0
Subtract 3244 from 3307 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Step 9:
If we divide 630 by 811, we get 0 and a remainder of 630.
Write down 0 as next digit of the result. 
Result so far: 81574.0
Subtracting 0 from 630 leaves us with 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

Advancing to step 10:
6300 divided by 811 is 7 with a remainder of 623.
Write down 7 as next digit of the result. 
Result so far: 81574.07
Deduct 5677 from 6300 and we're left with 623.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6230, and continue the process.

Moving on to step 11:
The number 811 fits into 6230 7 times, leaving a remainder of 553.
The next digit of our result is 7. 
Result so far: 81574.077
Subtract 5677 from 6230 to get 553.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5530, and continue the process.

The final result is 81574.077 with a remainder of 0.0553.