786809 ÷ 66 
Let's see how many times 66 fits into 786809.

Advancing to step 1:
The number 66 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 66

Moving on to step 2:
When dividing 78 by 66, we get 1 with a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 66 from 78 to get 12.
Fetch the next digit (6) from the dividend, attach it to 12 and continue: 126 / 66

Going ahead to step 3:
126 divided by 66 is 1 with a remainder of 60.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Subtract 66 from 126 to get 60.
Grab the next digit (8) from the dividend, add it to 60, then carry on: 608 / 66

Advancing to step 4:
66 goes into 608 9 times with a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 119.0
Subtract 594 from 608 to get 14.
Include the next digit (0) from the dividend after 14, then repeat: 140 / 66

Going ahead to step 5:
140 divided by 66 is 2 with a remainder of 8.
The next digit of our result is 2. 
Result so far: 1192.0
If we take 132 away from 140, we end up with 8.
Fetch the next digit (9) from the dividend, attach it to 8 and continue: 89 / 66

Let's proceed to step 6:
89 divided by 66 is 1 with a remainder of 23.
Use 1 as the next digit of our solution. 
Result so far: 11921.0
If we take 66 away from 89, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 7:
66 goes into 230 3 times with a remainder of 32.
Put 3 as the next digit of the answer. 
Result so far: 11921.3
Deduct 198 from 230 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 8:
If we divide 320 by 66, we get 4 and a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 11921.34
The remainder is 56 after subtracting 264 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 9:
The number 66 fits into 560 8 times, leaving a remainder of 32.
The next digit of our result is 8. 
Result so far: 11921.348
Deduct 528 from 560 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 10:
The number 66 fits into 320 4 times, leaving a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 11921.3484
If we take 264 away from 320, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 11:
66 can be fit into 560 8 times, resulting in a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 11921.34848
Subtract 528 from 560 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 12:
66 goes into 320 4 times with a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 11921.348484
Deduct 264 from 320 and we're left with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 13:
66 goes into 560 8 times with a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 11921.3484848
If we subtract 528 from 560, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Moving on to step 14:
66 can be fit into 320 4 times, resulting in a remainder of 56.
The next digit of our result is 4. 
Result so far: 11921.34848484
Subtract 264 from 320 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

The final result is 11921.34848484 with a remainder of 5.6e-08.