We look at the division of 869984 by 58 
The aim is to understand the frequency of 58 in 869984.

Going ahead to step 1:
8 divided by 58 is 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 58

Step 2:
86 divided by 58 is 1 with a remainder of 28.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 58 from 86 leaves us with 28.
Take the next digit (9) from the dividend and append it to 28, then repeat: 289 / 58

Advancing to step 3:
58 can be fit into 289 4 times, resulting in a remainder of 57.
The next digit of our result is 4. 
Result so far: 14.0
Subtract 232 from 289 to get 57.
Bring next digit (9) of the dividend behind the 57 and repeat the process: 579 / 58

Going ahead to step 4:
When dividing 579 by 58, we get 9 with a remainder of 57.
Use 9 as the next digit of our solution. 
Result so far: 149.0
If we subtract 522 from 579, we get 57.
Take the next digit (8) from the dividend and append it to 57, then repeat: 578 / 58

Moving on to step 5:
58 goes into 578 9 times with a remainder of 56.
Write down 9 as next digit of the result. 
Result so far: 1499.0
If we take 522 away from 578, we end up with 56.
Append the next digit (4) from the dividend to 56 and continue with: 564 / 58

Step 6:
58 goes into 564 9 times with a remainder of 42.
Record the quotient 9 as the next digit in the result. 
Result so far: 14999.0
The remainder is 42 after subtracting 522 from 564.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 7:
If we divide 420 by 58, we get 7 and a remainder of 14.
Record the quotient 7 as the next digit in the result. 
Result so far: 14999.7
If we take 406 away from 420, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 8:
The number 58 fits into 140 2 times, leaving a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 14999.72
If we take 116 away from 140, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 9:
58 goes into 240 4 times with a remainder of 8.
Write down 4 as next digit of the result. 
Result so far: 14999.724
If we subtract 232 from 240, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 10:
80 divided by 58 is 1 with a remainder of 22.
Put 1 as the next digit of the answer. 
Result so far: 14999.7241
Deduct 58 from 80 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 11:
58 goes into 220 3 times with a remainder of 46.
Write down 3 as next digit of the result. 
Result so far: 14999.72413
Subtracting 174 from 220 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 12:
58 can be fit into 460 7 times, resulting in a remainder of 54.
The next digit of our result is 7. 
Result so far: 14999.724137
Deduct 406 from 460 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 13:
The number 58 fits into 540 9 times, leaving a remainder of 18.
The next digit of our result is 9. 
Result so far: 14999.7241379
If we take 522 away from 540, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 14:
58 goes into 180 3 times with a remainder of 6.
The next digit of our result is 3. 
Result so far: 14999.72413793
The remainder is 6 after subtracting 174 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

In conclusion, the division gives 14999.72413793 with a balance of 6e-09.