We're dividing 213590 by 88 
The aim is to understand the frequency of 88 in 213590.

Step 1:
88 goes into 2 0 times with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 88

Going ahead to step 2:
21 divided by 88 is 0 with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Grab the next digit (3) from the dividend, add it to 21, then carry on: 213 / 88

Advancing to step 3:
When dividing 213 by 88, we get 2 with a remainder of 37.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 37 after subtracting 176 from 213.
Take the next digit (5) from the dividend and append it to 37, then repeat: 375 / 88

Moving on to step 4:
375 divided by 88 is 4 with a remainder of 23.
Put 4 as the next digit of the answer. 
Result so far: 24.0
Deduct 352 from 375 and we're left with 23.
Bring next digit (9) of the dividend behind the 23 and repeat the process: 239 / 88

Step 5:
88 goes into 239 2 times with a remainder of 63.
Write down 2 as next digit of the result. 
Result so far: 242.0
If we take 176 away from 239, we end up with 63.
Append the next digit (0) from the dividend to 63 and continue with: 630 / 88

Step 6:
88 can be fit into 630 7 times, resulting in a remainder of 14.
Record the quotient 7 as the next digit in the result. 
Result so far: 2427.0
The remainder is 14 after subtracting 616 from 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 7:
The number 88 fits into 140 1 times, leaving a remainder of 52.
Record the quotient 1 as the next digit in the result. 
Result so far: 2427.1
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.

Step 8:
88 goes into 520 5 times with a remainder of 80.
The number 5 becomes the next digit in our result. 
Result so far: 2427.15
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.

Step 9:
800 divided by 88 is 9 with a remainder of 8.
The number 9 becomes the next digit in our result. 
Result so far: 2427.159
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.

Moving on to step 10:
88 goes into 80 0 times with a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 2427.159
Deduct 0 from 80 and we're left 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.

Moving on to step 11:
The number 88 fits into 800 9 times, leaving a remainder of 8.
The next digit of our result is 9. 
Result so far: 2427.15909
If we subtract 792 from 800, 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.

Let's proceed to step 12:
88 goes into 80 0 times with a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 2427.15909
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.

Going ahead to step 13:
88 can be fit into 800 9 times, resulting in a remainder of 8.
Record the quotient 9 as the next digit in the result. 
Result so far: 2427.1590909
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.

Step 14:
88 can be fit into 80 0 times, resulting in a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 2427.1590909
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.

Our division results in 2427.1590909 with a remaining 8e-08.