We're dividing 644707 by 88 
The aim is to understand the frequency of 88 in 644707.

On to step 1:
The number 88 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 88

Advancing to step 2:
When dividing 64 by 88, we get 0 with a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Fetch the next digit (4) from the dividend, attach it to 64 and continue: 644 / 88

Step 3:
88 goes into 644 7 times with a remainder of 28.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we take 616 away from 644, we end up with 28.
Include the next digit (7) from the dividend after 28, then repeat: 287 / 88

Step 4:
287 divided by 88 is 3 with a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 73.0
Subtracting 264 from 287 leaves us with 23.
Grab the next digit (0) from the dividend, add it to 23, then carry on: 230 / 88

Let's proceed to step 5:
88 can be fit into 230 2 times, resulting in a remainder of 54.
Use 2 as the next digit of our solution. 
Result so far: 732.0
Subtracting 176 from 230 leaves us with 54.
Take the next digit (7) from the dividend and append it to 54, then repeat: 547 / 88

Step 6:
When dividing 547 by 88, we get 6 with a remainder of 19.
Record the quotient 6 as the next digit in the result. 
Result so far: 7326.0
If we subtract 528 from 547, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 7:
If we divide 190 by 88, we get 2 and a remainder of 14.
The number 2 becomes the next digit in our result. 
Result so far: 7326.2
The remainder is 14 after subtracting 176 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 8:
The number 88 fits into 140 1 times, leaving a remainder of 52.
The number 1 becomes the next digit in our result. 
Result so far: 7326.21
Deduct 88 from 140 and we're left with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 9:
88 can be fit into 520 5 times, resulting in a remainder of 80.
Write down 5 as next digit of the result. 
Result so far: 7326.215
If we take 440 away from 520, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 10:
When dividing 800 by 88, we get 9 with a remainder of 8.
The next digit of our result is 9. 
Result so far: 7326.2159
Subtract 792 from 800 to 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.

Let's proceed to step 11:
88 can be fit into 80 0 times, resulting in a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 7326.2159
The remainder is 80 after subtracting 0 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 12:
88 goes into 800 9 times with a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 7326.215909
Deduct 792 from 800 and we're left with 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 13:
The number 88 fits into 80 0 times, leaving a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 7326.215909
Subtract 0 from 80 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 14:
If we divide 800 by 88, we get 9 and a remainder of 8.
Use 9 as the next digit of our solution. 
Result so far: 7326.21590909
Subtracting 792 from 800 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 7326.21590909 with a remainder of 8e-09.