591811 ÷ 66 
We want to divide 591811 by 66.

On to step 1:
5 divided by 66 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (9) from the dividend, attach it to 5 and continue: 59 / 66

Advancing to step 2:
59 divided by 66 is 0 with a remainder of 59.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 59 leaves us with 59.
Bring next digit (1) of the dividend behind the 59 and repeat the process: 591 / 66

Advancing to step 3:
The number 66 fits into 591 8 times, leaving a remainder of 63.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 528 from 591 leaves us with 63.
Append the next digit (8) from the dividend to 63 and continue with: 638 / 66

Let's proceed to step 4:
66 goes into 638 9 times with a remainder of 44.
Record the quotient 9 as the next digit in the result. 
Result so far: 89.0
If we subtract 594 from 638, we get 44.
Grab the next digit (1) from the dividend, add it to 44, then carry on: 441 / 66

Step 5:
When dividing 441 by 66, we get 6 with a remainder of 45.
The number 6 becomes the next digit in our result. 
Result so far: 896.0
Deduct 396 from 441 and we're left with 45.
Append the next digit (1) from the dividend to 45 and continue with: 451 / 66

Advancing to step 6:
When dividing 451 by 66, we get 6 with a remainder of 55.
Put 6 as the next digit of the answer. 
Result so far: 8966.0
The remainder is 55 after subtracting 396 from 451.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 7:
66 can be fit into 550 8 times, resulting in a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 8966.8
Subtract 528 from 550 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 8:
If we divide 220 by 66, we get 3 and a remainder of 22.
Use 3 as the next digit of our solution. 
Result so far: 8966.83
Subtract 198 from 220 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 9:
66 goes into 220 3 times with a remainder of 22.
Write down 3 as next digit of the result. 
Result so far: 8966.833
Subtract 198 from 220 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The final outcome is 8966.833, with a leftover of 0.0022.