We look at the division of 28310015 by 830 
The aim is to understand the frequency of 830 in 28310015.

On to step 1:
2 divided by 830 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 830

Step 2:
830 can be fit into 28 0 times, resulting in a remainder of 28.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 28 leaves us with 28.
Fetch the next digit (3) from the dividend, attach it to 28 and continue: 283 / 830

Moving on to step 3:
When dividing 283 by 830, we get 0 with a remainder of 283.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 283 and we're left with 283.
Fetch the next digit (1) from the dividend, attach it to 283 and continue: 2831 / 830

On to step 4:
830 goes into 2831 3 times with a remainder of 341.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Deduct 2490 from 2831 and we're left with 341.
Append the next digit (0) from the dividend to 341 and continue with: 3410 / 830

Going ahead to step 5:
830 can be fit into 3410 4 times, resulting in a remainder of 90.
Put 4 as the next digit of the answer. 
Result so far: 34.0
Deduct 3320 from 3410 and we're left with 90.
Include the next digit (0) from the dividend after 90, then repeat: 900 / 830

Moving on to step 6:
If we divide 900 by 830, we get 1 and a remainder of 70.
Put 1 as the next digit of the answer. 
Result so far: 341.0
Deduct 830 from 900 and we're left with 70.
Grab the next digit (1) from the dividend, add it to 70, then carry on: 701 / 830

Let's proceed to step 7:
830 can be fit into 701 0 times, resulting in a remainder of 701.
Use 0 as the next digit of our solution. 
Result so far: 3410.0
Subtracting 0 from 701 leaves us with 701.
Bring next digit (5) of the dividend behind the 701 and repeat the process: 7015 / 830

Going ahead to step 8:
830 goes into 7015 8 times with a remainder of 375.
Record the quotient 8 as the next digit in the result. 
Result so far: 34108.0
Subtract 6640 from 7015 to get 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Moving on to step 9:
830 goes into 3750 4 times with a remainder of 430.
The number 4 becomes the next digit in our result. 
Result so far: 34108.4
If we subtract 3320 from 3750, we 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.

Step 10:
The number 830 fits into 4300 5 times, leaving a remainder of 150.
Write down 5 as next digit of the result. 
Result so far: 34108.45
Subtract 4150 from 4300 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 11:
The number 830 fits into 1500 1 times, leaving a remainder of 670.
The next digit of our result is 1. 
Result so far: 34108.451
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.

Advancing to step 12:
If we divide 6700 by 830, we get 8 and a remainder of 60.
Record the quotient 8 as the next digit in the result. 
Result so far: 34108.4518
Deduct 6640 from 6700 and we're left 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.

Moving on to step 13:
600 divided by 830 is 0 with a remainder of 600.
Record the quotient 0 as the next digit in the result. 
Result so far: 34108.4518
If we subtract 0 from 600, we get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Advancing to step 14:
The number 830 fits into 6000 7 times, leaving a remainder of 190.
The next digit of our result is 7. 
Result so far: 34108.451807
Deduct 5810 from 6000 and we're left with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Going ahead to step 15:
When dividing 1900 by 830, we get 2 with a remainder of 240.
Use 2 as the next digit of our solution. 
Result so far: 34108.4518072
If we take 1660 away from 1900, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 16:
The number 830 fits into 2400 2 times, leaving a remainder of 740.
Record the quotient 2 as the next digit in the result. 
Result so far: 34108.45180722
Subtract 1660 from 2400 to get 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

After the division, we end up with 34108.45180722 and a remainder of 7.4e-07.