66558299 divided by 975 
We want to figure out the number of times 66558299 can be divided by 975.

On to step 1:
When dividing 6 by 975, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 975

Advancing to step 2:
When dividing 66 by 975, we get 0 with a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Include the next digit (5) from the dividend after 66, then repeat: 665 / 975

On to step 3:
665 divided by 975 is 0 with a remainder of 665.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 665, we end up with 665.
Bring next digit (5) of the dividend behind the 665 and repeat the process: 6655 / 975

Advancing to step 4:
975 can be fit into 6655 6 times, resulting in a remainder of 805.
Write down 6 as next digit of the result. 
Result so far: 6.0
Subtracting 5850 from 6655 leaves us with 805.
Fetch the next digit (8) from the dividend, attach it to 805 and continue: 8058 / 975

Step 5:
The number 975 fits into 8058 8 times, leaving a remainder of 258.
Put 8 as the next digit of the answer. 
Result so far: 68.0
If we take 7800 away from 8058, we end up with 258.
Append the next digit (2) from the dividend to 258 and continue with: 2582 / 975

Advancing to step 6:
975 goes into 2582 2 times with a remainder of 632.
The number 2 becomes the next digit in our result. 
Result so far: 682.0
The remainder is 632 after subtracting 1950 from 2582.
Include the next digit (9) from the dividend after 632, then repeat: 6329 / 975

Moving on to step 7:
When dividing 6329 by 975, we get 6 with a remainder of 479.
Use 6 as the next digit of our solution. 
Result so far: 6826.0
Deduct 5850 from 6329 and we're left with 479.
Include the next digit (9) from the dividend after 479, then repeat: 4799 / 975

On to step 8:
975 goes into 4799 4 times with a remainder of 899.
The next digit of our result is 4. 
Result so far: 68264.0
The remainder is 899 after subtracting 3900 from 4799.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8990, and continue the process.

Step 9:
8990 divided by 975 is 9 with a remainder of 215.
Record the quotient 9 as the next digit in the result. 
Result so far: 68264.9
If we subtract 8775 from 8990, we get 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Advancing to step 10:
2150 divided by 975 is 2 with a remainder of 200.
Use 2 as the next digit of our solution. 
Result so far: 68264.92
Subtracting 1950 from 2150 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Step 11:
When dividing 2000 by 975, we get 2 with a remainder of 50.
Write down 2 as next digit of the result. 
Result so far: 68264.922
If we take 1950 away from 2000, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

After the division, we end up with 68264.922 and a remainder of 0.005.