25111391 ÷ 830 
Let's see how many times 830 fits into 25111391.

Advancing to step 1:
If we divide 2 by 830, we get 0 and a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 830

Advancing to step 2:
The number 830 fits into 25 0 times, leaving a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 25, we get 25.
Grab the next digit (1) from the dividend, add it to 25, then carry on: 251 / 830

Let's proceed to step 3:
251 divided by 830 is 0 with a remainder of 251.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 251 and we're left with 251.
Fetch the next digit (1) from the dividend, attach it to 251 and continue: 2511 / 830

Let's proceed to step 4:
830 goes into 2511 3 times with a remainder of 21.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 2490 away from 2511, we end up with 21.
Take the next digit (1) from the dividend and append it to 21, then repeat: 211 / 830

Moving on to step 5:
830 goes into 211 0 times with a remainder of 211.
The number 0 becomes the next digit in our result. 
Result so far: 30.0
Deduct 0 from 211 and we're left with 211.
Take the next digit (3) from the dividend and append it to 211, then repeat: 2113 / 830

Let's proceed to step 6:
The number 830 fits into 2113 2 times, leaving a remainder of 453.
The next digit of our result is 2. 
Result so far: 302.0
Deduct 1660 from 2113 and we're left with 453.
Grab the next digit (9) from the dividend, add it to 453, then carry on: 4539 / 830

Step 7:
When dividing 4539 by 830, we get 5 with a remainder of 389.
The number 5 becomes the next digit in our result. 
Result so far: 3025.0
Deduct 4150 from 4539 and we're left with 389.
Include the next digit (1) from the dividend after 389, then repeat: 3891 / 830

Advancing to step 8:
When dividing 3891 by 830, we get 4 with a remainder of 571.
The next digit of our result is 4. 
Result so far: 30254.0
Deduct 3320 from 3891 and we're left with 571.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5710, and continue the process.

Going ahead to step 9:
830 goes into 5710 6 times with a remainder of 730.
The number 6 becomes the next digit in our result. 
Result so far: 30254.6
Subtract 4980 from 5710 to get 730.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7300, and continue the process.

Advancing to step 10:
830 can be fit into 7300 8 times, resulting in a remainder of 660.
The number 8 becomes the next digit in our result. 
Result so far: 30254.68
If we subtract 6640 from 7300, we get 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Step 11:
830 can be fit into 6600 7 times, resulting in a remainder of 790.
Put 7 as the next digit of the answer. 
Result so far: 30254.687
Deduct 5810 from 6600 and we're left with 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7900, and continue the process.

Going ahead to step 12:
7900 divided by 830 is 9 with a remainder of 430.
Write down 9 as next digit of the result. 
Result so far: 30254.6879
Subtract 7470 from 7900 to get 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Let's proceed to step 13:
When dividing 4300 by 830, we get 5 with a remainder of 150.
The next digit of our result is 5. 
Result so far: 30254.68795
If we take 4150 away from 4300, we end up with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Moving on to step 14:
If we divide 1500 by 830, we get 1 and a remainder of 670.
The number 1 becomes the next digit in our result. 
Result so far: 30254.687951
Subtracting 830 from 1500 leaves us with 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6700, and continue the process.

Going ahead to step 15:
830 can be fit into 6700 8 times, resulting in a remainder of 60.
The number 8 becomes the next digit in our result. 
Result so far: 30254.6879518
If we take 6640 away from 6700, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 16:
830 goes into 600 0 times with a remainder of 600.
Write down 0 as next digit of the result. 
Result so far: 30254.6879518
If we take 0 away from 600, we end up with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

In conclusion, the division gives 30254.6879518 with a balance of 6e-07.