66540757 ÷ 879 
We want to figure out the number of times 66540757 can be divided by 879.

Moving on to step 1:
6 divided by 879 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 879

Moving on to step 2:
When dividing 66 by 879, we get 0 with a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Take the next digit (5) from the dividend and append it to 66, then repeat: 665 / 879

Let's proceed to step 3:
When dividing 665 by 879, we get 0 with a remainder of 665.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 665 after subtracting 0 from 665.
Include the next digit (4) from the dividend after 665, then repeat: 6654 / 879

On to step 4:
879 goes into 6654 7 times with a remainder of 501.
Write down 7 as next digit of the result. 
Result so far: 7.0
The remainder is 501 after subtracting 6153 from 6654.
Bring next digit (0) of the dividend behind the 501 and repeat the process: 5010 / 879

Moving on to step 5:
879 can be fit into 5010 5 times, resulting in a remainder of 615.
The number 5 becomes the next digit in our result. 
Result so far: 75.0
If we take 4395 away from 5010, we end up with 615.
Bring next digit (7) of the dividend behind the 615 and repeat the process: 6157 / 879

Going ahead to step 6:
When dividing 6157 by 879, we get 7 with a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 757.0
The remainder is 4 after subtracting 6153 from 6157.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 879

Let's proceed to step 7:
45 divided by 879 is 0 with a remainder of 45.
The next digit of our result is 0. 
Result so far: 7570.0
If we take 0 away from 45, we end up with 45.
Take the next digit (7) from the dividend and append it to 45, then repeat: 457 / 879

Moving on to step 8:
If we divide 457 by 879, we get 0 and a remainder of 457.
Record the quotient 0 as the next digit in the result. 
Result so far: 75700.0
Subtracting 0 from 457 leaves us with 457.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4570, and continue the process.

Let's proceed to step 9:
4570 divided by 879 is 5 with a remainder of 175.
Record the quotient 5 as the next digit in the result. 
Result so far: 75700.5
Subtracting 4395 from 4570 leaves us with 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Let's proceed to step 10:
When dividing 1750 by 879, we get 1 with a remainder of 871.
The number 1 becomes the next digit in our result. 
Result so far: 75700.51
Subtract 879 from 1750 to get 871.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8710, and continue the process.

Let's proceed to step 11:
879 can be fit into 8710 9 times, resulting in a remainder of 799.
Record the quotient 9 as the next digit in the result. 
Result so far: 75700.519
If we subtract 7911 from 8710, we get 799.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7990, and continue the process.

Moving on to step 12:
879 can be fit into 7990 9 times, resulting in a remainder of 79.
Put 9 as the next digit of the answer. 
Result so far: 75700.5199
Subtracting 7911 from 7990 leaves us with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

The final outcome is 75700.5199, with a leftover of 0.00079.