66180841 ÷ 830 
Let's see how many times 830 fits into 66180841.

Advancing to step 1:
The number 830 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 830

Moving on to step 2:
The number 830 fits into 66 0 times, leaving a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Fetch the next digit (1) from the dividend, attach it to 66 and continue: 661 / 830

Advancing to step 3:
The number 830 fits into 661 0 times, leaving a remainder of 661.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 661 and we're left with 661.
Append the next digit (8) from the dividend to 661 and continue with: 6618 / 830

On to step 4:
If we divide 6618 by 830, we get 7 and a remainder of 808.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 5810 from 6618, we get 808.
Grab the next digit (0) from the dividend, add it to 808, then carry on: 8080 / 830

Advancing to step 5:
The number 830 fits into 8080 9 times, leaving a remainder of 610.
Write down 9 as next digit of the result. 
Result so far: 79.0
The remainder is 610 after subtracting 7470 from 8080.
Fetch the next digit (8) from the dividend, attach it to 610 and continue: 6108 / 830

Advancing to step 6:
830 goes into 6108 7 times with a remainder of 298.
Put 7 as the next digit of the answer. 
Result so far: 797.0
If we take 5810 away from 6108, we end up with 298.
Grab the next digit (4) from the dividend, add it to 298, then carry on: 2984 / 830

Moving on to step 7:
The number 830 fits into 2984 3 times, leaving a remainder of 494.
Use 3 as the next digit of our solution. 
Result so far: 7973.0
If we take 2490 away from 2984, we end up with 494.
Include the next digit (1) from the dividend after 494, then repeat: 4941 / 830

Going ahead to step 8:
When dividing 4941 by 830, we get 5 with a remainder of 791.
Record the quotient 5 as the next digit in the result. 
Result so far: 79735.0
If we take 4150 away from 4941, we end up with 791.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7910, and continue the process.

On to step 9:
The number 830 fits into 7910 9 times, leaving a remainder of 440.
The next digit of our result is 9. 
Result so far: 79735.9
Subtract 7470 from 7910 to get 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Step 10:
830 goes into 4400 5 times with a remainder of 250.
The number 5 becomes the next digit in our result. 
Result so far: 79735.95
If we subtract 4150 from 4400, we get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Let's proceed to step 11:
830 goes into 2500 3 times with a remainder of 10.
The next digit of our result is 3. 
Result so far: 79735.953
Subtract 2490 from 2500 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 12:
830 can be fit into 100 0 times, resulting in a remainder of 100.
The number 0 becomes the next digit in our result. 
Result so far: 79735.953
Deduct 0 from 100 and we're left with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Moving on to step 13:
When dividing 1000 by 830, we get 1 with a remainder of 170.
The next digit of our result is 1. 
Result so far: 79735.95301
Deduct 830 from 1000 and we're left with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Let's proceed to step 14:
When dividing 1700 by 830, we get 2 with a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 79735.953012
Deduct 1660 from 1700 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 15:
830 can be fit into 400 0 times, resulting in a remainder of 400.
The next digit of our result is 0. 
Result so far: 79735.953012
Subtract 0 from 400 to get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Let's proceed to step 16:
If we divide 4000 by 830, we get 4 and a remainder of 680.
The next digit of our result is 4. 
Result so far: 79735.95301204
Subtracting 3320 from 4000 leaves us with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

The final outcome is 79735.95301204, with a leftover of 6.8e-07.