We look at the division of 68638971 by 830 
The aim is to understand the frequency of 830 in 68638971.

Step 1:
830 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 830

Moving on to step 2:
The number 830 fits into 68 0 times, leaving a remainder of 68.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 68 leaves us with 68.
Bring next digit (6) of the dividend behind the 68 and repeat the process: 686 / 830

Moving on to step 3:
When dividing 686 by 830, we get 0 with a remainder of 686.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 686, we end up with 686.
Append the next digit (3) from the dividend to 686 and continue with: 6863 / 830

Advancing to step 4:
If we divide 6863 by 830, we get 8 and a remainder of 223.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtract 6640 from 6863 to get 223.
Fetch the next digit (8) from the dividend, attach it to 223 and continue: 2238 / 830

Let's proceed to step 5:
830 can be fit into 2238 2 times, resulting in a remainder of 578.
Record the quotient 2 as the next digit in the result. 
Result so far: 82.0
If we take 1660 away from 2238, we end up with 578.
Append the next digit (9) from the dividend to 578 and continue with: 5789 / 830

On to step 6:
830 goes into 5789 6 times with a remainder of 809.
Write down 6 as next digit of the result. 
Result so far: 826.0
Subtracting 4980 from 5789 leaves us with 809.
Append the next digit (7) from the dividend to 809 and continue with: 8097 / 830

Advancing to step 7:
If we divide 8097 by 830, we get 9 and a remainder of 627.
Write down 9 as next digit of the result. 
Result so far: 8269.0
Subtract 7470 from 8097 to get 627.
Grab the next digit (1) from the dividend, add it to 627, then carry on: 6271 / 830

Moving on to step 8:
830 goes into 6271 7 times with a remainder of 461.
Write down 7 as next digit of the result. 
Result so far: 82697.0
If we subtract 5810 from 6271, we get 461.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4610, and continue the process.

Step 9:
830 can be fit into 4610 5 times, resulting in a remainder of 460.
Record the quotient 5 as the next digit in the result. 
Result so far: 82697.5
Deduct 4150 from 4610 and we're left with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

On to step 10:
830 can be fit into 4600 5 times, resulting in a remainder of 450.
Write down 5 as next digit of the result. 
Result so far: 82697.55
If we take 4150 away from 4600, we end up with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Our division results in 82697.55 with a remaining 0.45.