91439 ÷ 69 
The aim is to understand the frequency of 69 in 91439.

Advancing to step 1:
69 can be fit into 9 0 times, resulting in a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 69

Going ahead to step 2:
91 divided by 69 is 1 with a remainder of 22.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 69 from 91 leaves us with 22.
Take the next digit (4) from the dividend and append it to 22, then repeat: 224 / 69

On to step 3:
224 divided by 69 is 3 with a remainder of 17.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we subtract 207 from 224, we get 17.
Take the next digit (3) from the dividend and append it to 17, then repeat: 173 / 69

Advancing to step 4:
The number 69 fits into 173 2 times, leaving a remainder of 35.
The next digit of our result is 2. 
Result so far: 132.0
Subtracting 138 from 173 leaves us with 35.
Take the next digit (9) from the dividend and append it to 35, then repeat: 359 / 69

Let's proceed to step 5:
When dividing 359 by 69, we get 5 with a remainder of 14.
The number 5 becomes the next digit in our result. 
Result so far: 1325.0
Subtracting 345 from 359 leaves us 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.

Going ahead to step 6:
The number 69 fits into 140 2 times, leaving a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 1325.2
If we subtract 138 from 140, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 7:
If we divide 20 by 69, we get 0 and a remainder of 20.
The next digit of our result is 0. 
Result so far: 1325.2
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
When dividing 200 by 69, we get 2 with a remainder of 62.
The number 2 becomes the next digit in our result. 
Result so far: 1325.202
The remainder is 62 after subtracting 138 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 9:
When dividing 620 by 69, we get 8 with a remainder of 68.
The number 8 becomes the next digit in our result. 
Result so far: 1325.2028
Subtracting 552 from 620 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 10:
The number 69 fits into 680 9 times, leaving a remainder of 59.
The number 9 becomes the next digit in our result. 
Result so far: 1325.20289
Deduct 621 from 680 and we're left with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

On to step 11:
If we divide 590 by 69, we get 8 and a remainder of 38.
Write down 8 as next digit of the result. 
Result so far: 1325.202898
Subtracting 552 from 590 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 12:
69 goes into 380 5 times with a remainder of 35.
The next digit of our result is 5. 
Result so far: 1325.2028985
If we subtract 345 from 380, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 13:
The number 69 fits into 350 5 times, leaving a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 1325.20289855
If we take 345 away from 350, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 1325.20289855, with a leftover of 5e-09.