Let's divide 80170428 by 830
We're looking to find how many times 830 goes into 80170428.

Going ahead to step 1:
When dividing 8 by 830, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 830

Moving on to step 2:
When dividing 80 by 830, we get 0 with a remainder of 80.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 80 after subtracting 0 from 80.
Bring next digit (1) of the dividend behind the 80 and repeat the process: 801 / 830

Going ahead to step 3:
If we divide 801 by 830, we get 0 and a remainder of 801.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 801, we end up with 801.
Grab the next digit (7) from the dividend, add it to 801, then carry on: 8017 / 830

Step 4:
830 can be fit into 8017 9 times, resulting in a remainder of 547.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we take 7470 away from 8017, we end up with 547.
Include the next digit (0) from the dividend after 547, then repeat: 5470 / 830

Moving on to step 5:
830 can be fit into 5470 6 times, resulting in a remainder of 490.
Use 6 as the next digit of our solution. 
Result so far: 96.0
Deduct 4980 from 5470 and we're left with 490.
Take the next digit (4) from the dividend and append it to 490, then repeat: 4904 / 830

Moving on to step 6:
830 goes into 4904 5 times with a remainder of 754.
The number 5 becomes the next digit in our result. 
Result so far: 965.0
Subtract 4150 from 4904 to get 754.
Fetch the next digit (2) from the dividend, attach it to 754 and continue: 7542 / 830

Advancing to step 7:
If we divide 7542 by 830, we get 9 and a remainder of 72.
Put 9 as the next digit of the answer. 
Result so far: 9659.0
If we subtract 7470 from 7542, we get 72.
Include the next digit (8) from the dividend after 72, then repeat: 728 / 830

Moving on to step 8:
The number 830 fits into 728 0 times, leaving a remainder of 728.
Write down 0 as next digit of the result. 
Result so far: 96590.0
If we subtract 0 from 728, we get 728.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7280, and continue the process.

Let's proceed to step 9:
830 can be fit into 7280 8 times, resulting in a remainder of 640.
Put 8 as the next digit of the answer. 
Result so far: 96590.8
Deduct 6640 from 7280 and we're left with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Step 10:
The number 830 fits into 6400 7 times, leaving a remainder of 590.
Use 7 as the next digit of our solution. 
Result so far: 96590.87
If we subtract 5810 from 6400, we get 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

On to step 11:
5900 divided by 830 is 7 with a remainder of 90.
Write down 7 as next digit of the result. 
Result so far: 96590.877
If we take 5810 away from 5900, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

In conclusion, the division gives 96590.877 with a balance of 0.009.