66791809 ÷ 559 
We want to divide 66791809 by 559.

Step 1:
When dividing 6 by 559, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 559

Going ahead to step 2:
If we divide 66 by 559, we get 0 and 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.
Append the next digit (7) from the dividend to 66 and continue with: 667 / 559

Going ahead to step 3:
559 goes into 667 1 times with a remainder of 108.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 559 from 667 to get 108.
Take the next digit (9) from the dividend and append it to 108, then repeat: 1089 / 559

Advancing to step 4:
If we divide 1089 by 559, we get 1 and a remainder of 530.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Deduct 559 from 1089 and we're left with 530.
Include the next digit (1) from the dividend after 530, then repeat: 5301 / 559

Let's proceed to step 5:
559 can be fit into 5301 9 times, resulting in a remainder of 270.
The number 9 becomes the next digit in our result. 
Result so far: 119.0
Subtract 5031 from 5301 to get 270.
Grab the next digit (8) from the dividend, add it to 270, then carry on: 2708 / 559

Let's proceed to step 6:
2708 divided by 559 is 4 with a remainder of 472.
The next digit of our result is 4. 
Result so far: 1194.0
If we subtract 2236 from 2708, we get 472.
Bring next digit (0) of the dividend behind the 472 and repeat the process: 4720 / 559

Moving on to step 7:
When dividing 4720 by 559, we get 8 with a remainder of 248.
The next digit of our result is 8. 
Result so far: 11948.0
Deduct 4472 from 4720 and we're left with 248.
Fetch the next digit (9) from the dividend, attach it to 248 and continue: 2489 / 559

Moving on to step 8:
When dividing 2489 by 559, we get 4 with a remainder of 253.
Record the quotient 4 as the next digit in the result. 
Result so far: 119484.0
Deduct 2236 from 2489 and we're left with 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

On to step 9:
The number 559 fits into 2530 4 times, leaving a remainder of 294.
Write down 4 as next digit of the result. 
Result so far: 119484.4
If we subtract 2236 from 2530, we get 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Advancing to step 10:
If we divide 2940 by 559, we get 5 and a remainder of 145.
The number 5 becomes the next digit in our result. 
Result so far: 119484.45
Deduct 2795 from 2940 and we're left with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Step 11:
1450 divided by 559 is 2 with a remainder of 332.
Record the quotient 2 as the next digit in the result. 
Result so far: 119484.452
If we take 1118 away from 1450, we end up with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Going ahead to step 12:
3320 divided by 559 is 5 with a remainder of 525.
Record the quotient 5 as the next digit in the result. 
Result so far: 119484.4525
Subtract 2795 from 3320 to get 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

Going ahead to step 13:
The number 559 fits into 5250 9 times, leaving a remainder of 219.
Record the quotient 9 as the next digit in the result. 
Result so far: 119484.45259
Deduct 5031 from 5250 and we're left with 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

On to step 14:
559 goes into 2190 3 times with a remainder of 513.
Put 3 as the next digit of the answer. 
Result so far: 119484.452593
Subtracting 1677 from 2190 leaves us with 513.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5130, and continue the process.

On to step 15:
559 goes into 5130 9 times with a remainder of 99.
The next digit of our result is 9. 
Result so far: 119484.4525939
If we take 5031 away from 5130, we end up with 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Going ahead to step 16:
559 can be fit into 990 1 times, resulting in a remainder of 431.
Put 1 as the next digit of the answer. 
Result so far: 119484.45259391
If we subtract 559 from 990, we get 431.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4310, and continue the process.

The quotient of the division is 119484.45259391, and the remainder is 4.31e-07.