We're dividing 66966555 by 260 
Let's see how many times 260 fits into 66966555.

Step 1:
260 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 260

On to step 2:
When dividing 66 by 260, we get 0 with a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Grab the next digit (9) from the dividend, add it to 66, then carry on: 669 / 260

Going ahead to step 3:
If we divide 669 by 260, we get 2 and a remainder of 149.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 520 from 669 and we're left with 149.
Take the next digit (6) from the dividend and append it to 149, then repeat: 1496 / 260

Moving on to step 4:
When dividing 1496 by 260, we get 5 with a remainder of 196.
Put 5 as the next digit of the answer. 
Result so far: 25.0
The remainder is 196 after subtracting 1300 from 1496.
Append the next digit (6) from the dividend to 196 and continue with: 1966 / 260

Going ahead to step 5:
260 goes into 1966 7 times with a remainder of 146.
The next digit of our result is 7. 
Result so far: 257.0
Subtract 1820 from 1966 to get 146.
Include the next digit (5) from the dividend after 146, then repeat: 1465 / 260

Advancing to step 6:
If we divide 1465 by 260, we get 5 and a remainder of 165.
The number 5 becomes the next digit in our result. 
Result so far: 2575.0
Subtract 1300 from 1465 to get 165.
Fetch the next digit (5) from the dividend, attach it to 165 and continue: 1655 / 260

Step 7:
260 goes into 1655 6 times with a remainder of 95.
Use 6 as the next digit of our solution. 
Result so far: 25756.0
The remainder is 95 after subtracting 1560 from 1655.
Include the next digit (5) from the dividend after 95, then repeat: 955 / 260

Moving on to step 8:
The number 260 fits into 955 3 times, leaving a remainder of 175.
The number 3 becomes the next digit in our result. 
Result so far: 257563.0
If we take 780 away from 955, we end up 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.

Going ahead to step 9:
The number 260 fits into 1750 6 times, leaving a remainder of 190.
The number 6 becomes the next digit in our result. 
Result so far: 257563.6
If we take 1560 away from 1750, we end up 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.

Going ahead to step 10:
The number 260 fits into 1900 7 times, leaving a remainder of 80.
The next digit of our result is 7. 
Result so far: 257563.67
Deduct 1820 from 1900 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 11:
260 goes into 800 3 times with a remainder of 20.
Write down 3 as next digit of the result. 
Result so far: 257563.673
If we take 780 away from 800, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 12:
260 goes into 200 0 times with a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 257563.673
The remainder is 200 after subtracting 0 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 13:
If we divide 2000 by 260, we get 7 and a remainder of 180.
Write down 7 as next digit of the result. 
Result so far: 257563.67307
The remainder is 180 after subtracting 1820 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Let's proceed to step 14:
1800 divided by 260 is 6 with a remainder of 240.
Write down 6 as next digit of the result. 
Result so far: 257563.673076
The remainder is 240 after subtracting 1560 from 1800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 15:
The number 260 fits into 2400 9 times, leaving a remainder of 60.
Record the quotient 9 as the next digit in the result. 
Result so far: 257563.6730769
The remainder is 60 after subtracting 2340 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 16:
260 goes into 600 2 times with a remainder of 80.
Record the quotient 2 as the next digit in the result. 
Result so far: 257563.67307692
The remainder is 80 after subtracting 520 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final outcome is 257563.67307692, with a leftover of 8e-08.