57128985 divided by 830 
We want to figure out the number of times 57128985 can be divided by 830.

Advancing to step 1:
When dividing 5 by 830, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (7) from the dividend after 5, then repeat: 57 / 830

Going ahead to step 2:
When dividing 57 by 830, we get 0 with a remainder of 57.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 57 after subtracting 0 from 57.
Append the next digit (1) from the dividend to 57 and continue with: 571 / 830

Step 3:
571 divided by 830 is 0 with a remainder of 571.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 571, we end up with 571.
Append the next digit (2) from the dividend to 571 and continue with: 5712 / 830

Going ahead to step 4:
If we divide 5712 by 830, we get 6 and a remainder of 732.
Write down 6 as next digit of the result. 
Result so far: 6.0
Subtract 4980 from 5712 to get 732.
Fetch the next digit (8) from the dividend, attach it to 732 and continue: 7328 / 830

Moving on to step 5:
7328 divided by 830 is 8 with a remainder of 688.
The number 8 becomes the next digit in our result. 
Result so far: 68.0
The remainder is 688 after subtracting 6640 from 7328.
Include the next digit (9) from the dividend after 688, then repeat: 6889 / 830

Step 6:
When dividing 6889 by 830, we get 8 with a remainder of 249.
Use 8 as the next digit of our solution. 
Result so far: 688.0
Subtracting 6640 from 6889 leaves us with 249.
Fetch the next digit (8) from the dividend, attach it to 249 and continue: 2498 / 830

Going ahead to step 7:
The number 830 fits into 2498 3 times, leaving a remainder of 8.
Use 3 as the next digit of our solution. 
Result so far: 6883.0
If we take 2490 away from 2498, we end up with 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 830

Let's proceed to step 8:
830 goes into 85 0 times with a remainder of 85.
Write down 0 as next digit of the result. 
Result so far: 68830.0
Deduct 0 from 85 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Advancing to step 9:
The number 830 fits into 850 1 times, leaving a remainder of 20.
The next digit of our result is 1. 
Result so far: 68830.1
The remainder is 20 after subtracting 830 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 10:
830 can be fit into 200 0 times, resulting in a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 68830.1
If we take 0 away from 200, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 11:
The number 830 fits into 2000 2 times, leaving a remainder of 340.
The number 2 becomes the next digit in our result. 
Result so far: 68830.102
If we take 1660 away from 2000, we end up with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Step 12:
If we divide 3400 by 830, we get 4 and a remainder of 80.
Record the quotient 4 as the next digit in the result. 
Result so far: 68830.1024
If we take 3320 away from 3400, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 13:
830 goes into 800 0 times with a remainder of 800.
Write down 0 as next digit of the result. 
Result so far: 68830.1024
If we take 0 away from 800, we end up with 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

Step 14:
If we divide 8000 by 830, we get 9 and a remainder of 530.
The number 9 becomes the next digit in our result. 
Result so far: 68830.102409
Subtract 7470 from 8000 to get 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Step 15:
5300 divided by 830 is 6 with a remainder of 320.
Put 6 as the next digit of the answer. 
Result so far: 68830.1024096
Deduct 4980 from 5300 and we're left with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 16:
830 goes into 3200 3 times with a remainder of 710.
Put 3 as the next digit of the answer. 
Result so far: 68830.10240963
Deduct 2490 from 3200 and we're left with 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7100, and continue the process.

In conclusion, the division gives 68830.10240963 with a balance of 7.1e-07.