66691999 divided by 579 
We want to figure out the number of times 66691999 can be divided by 579.

Moving on to step 1:
6 divided by 579 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 579

Let's proceed to step 2:
579 can be fit into 66 0 times, resulting in a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Fetch the next digit (6) from the dividend, attach it to 66 and continue: 666 / 579

Going ahead to step 3:
If we divide 666 by 579, we get 1 and a remainder of 87.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 579 from 666 and we're left with 87.
Take the next digit (9) from the dividend and append it to 87, then repeat: 879 / 579

On to step 4:
If we divide 879 by 579, we get 1 and a remainder of 300.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
If we subtract 579 from 879, we get 300.
Fetch the next digit (1) from the dividend, attach it to 300 and continue: 3001 / 579

Moving on to step 5:
If we divide 3001 by 579, we get 5 and a remainder of 106.
Record the quotient 5 as the next digit in the result. 
Result so far: 115.0
Subtracting 2895 from 3001 leaves us with 106.
Take the next digit (9) from the dividend and append it to 106, then repeat: 1069 / 579

Advancing to step 6:
579 can be fit into 1069 1 times, resulting in a remainder of 490.
Put 1 as the next digit of the answer. 
Result so far: 1151.0
Subtract 579 from 1069 to get 490.
Take the next digit (9) from the dividend and append it to 490, then repeat: 4909 / 579

Moving on to step 7:
579 goes into 4909 8 times with a remainder of 277.
Use 8 as the next digit of our solution. 
Result so far: 11518.0
Subtracting 4632 from 4909 leaves us with 277.
Grab the next digit (9) from the dividend, add it to 277, then carry on: 2779 / 579

On to step 8:
If we divide 2779 by 579, we get 4 and a remainder of 463.
Use 4 as the next digit of our solution. 
Result so far: 115184.0
If we take 2316 away from 2779, we end up with 463.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4630, and continue the process.

Step 9:
579 goes into 4630 7 times with a remainder of 577.
Record the quotient 7 as the next digit in the result. 
Result so far: 115184.7
The remainder is 577 after subtracting 4053 from 4630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5770, and continue the process.

On to step 10:
The number 579 fits into 5770 9 times, leaving a remainder of 559.
Put 9 as the next digit of the answer. 
Result so far: 115184.79
If we take 5211 away from 5770, we end up with 559.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5590, and continue the process.

Step 11:
5590 divided by 579 is 9 with a remainder of 379.
Use 9 as the next digit of our solution. 
Result so far: 115184.799
If we subtract 5211 from 5590, we get 379.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3790, and continue the process.

In conclusion, the division gives 115184.799 with a balance of 0.0379.