We look at the division of 664645 by 88 
The aim is to understand the frequency of 88 in 664645.

On to step 1:
If we divide 6 by 88, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 88

Going ahead to step 2:
66 divided by 88 is 0 with a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Fetch the next digit (4) from the dividend, attach it to 66 and continue: 664 / 88

Moving on to step 3:
88 goes into 664 7 times with a remainder of 48.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtract 616 from 664 to get 48.
Append the next digit (6) from the dividend to 48 and continue with: 486 / 88

Step 4:
When dividing 486 by 88, we get 5 with a remainder of 46.
Put 5 as the next digit of the answer. 
Result so far: 75.0
If we subtract 440 from 486, we get 46.
Fetch the next digit (4) from the dividend, attach it to 46 and continue: 464 / 88

Advancing to step 5:
464 divided by 88 is 5 with a remainder of 24.
Record the quotient 5 as the next digit in the result. 
Result so far: 755.0
Subtracting 440 from 464 leaves us with 24.
Append the next digit (5) from the dividend to 24 and continue with: 245 / 88

Step 6:
The number 88 fits into 245 2 times, leaving a remainder of 69.
The number 2 becomes the next digit in our result. 
Result so far: 7552.0
If we take 176 away from 245, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 7:
88 goes into 690 7 times with a remainder of 74.
The number 7 becomes the next digit in our result. 
Result so far: 7552.7
Deduct 616 from 690 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 8:
740 divided by 88 is 8 with a remainder of 36.
Write down 8 as next digit of the result. 
Result so far: 7552.78
The remainder is 36 after subtracting 704 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 9:
360 divided by 88 is 4 with a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 7552.784
Deduct 352 from 360 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.

Going ahead to step 10:
88 can be fit into 80 0 times, resulting in a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 7552.784
If we take 0 away from 80, 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.

Advancing to step 11:
800 divided by 88 is 9 with a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 7552.78409
The remainder is 8 after subtracting 792 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 12:
If we divide 80 by 88, we get 0 and a remainder of 80.
The next digit of our result is 0. 
Result so far: 7552.78409
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.

On to step 13:
800 divided by 88 is 9 with a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 7552.7840909
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.

Advancing to step 14:
80 divided by 88 is 0 with a remainder of 80.
The next digit of our result is 0. 
Result so far: 7552.7840909
If we subtract 0 from 80, we 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.

The quotient of the division is 7552.7840909, and the remainder is 8e-08.