We're dividing 88637075 by 215 
The aim is to understand the frequency of 215 in 88637075.

Moving on to step 1:
8 divided by 215 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (8) from the dividend after 8, then repeat: 88 / 215

Advancing to step 2:
88 divided by 215 is 0 with a remainder of 88.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 88 after subtracting 0 from 88.
Take the next digit (6) from the dividend and append it to 88, then repeat: 886 / 215

Moving on to step 3:
215 goes into 886 4 times with a remainder of 26.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we subtract 860 from 886, we get 26.
Append the next digit (3) from the dividend to 26 and continue with: 263 / 215

Advancing to step 4:
The number 215 fits into 263 1 times, leaving a remainder of 48.
Record the quotient 1 as the next digit in the result. 
Result so far: 41.0
If we subtract 215 from 263, we get 48.
Grab the next digit (7) from the dividend, add it to 48, then carry on: 487 / 215

Moving on to step 5:
215 goes into 487 2 times with a remainder of 57.
Record the quotient 2 as the next digit in the result. 
Result so far: 412.0
Subtract 430 from 487 to get 57.
Fetch the next digit (0) from the dividend, attach it to 57 and continue: 570 / 215

Advancing to step 6:
If we divide 570 by 215, we get 2 and a remainder of 140.
The number 2 becomes the next digit in our result. 
Result so far: 4122.0
If we subtract 430 from 570, we get 140.
Grab the next digit (7) from the dividend, add it to 140, then carry on: 1407 / 215

Let's proceed to step 7:
The number 215 fits into 1407 6 times, leaving a remainder of 117.
Record the quotient 6 as the next digit in the result. 
Result so far: 41226.0
Subtracting 1290 from 1407 leaves us with 117.
Bring next digit (5) of the dividend behind the 117 and repeat the process: 1175 / 215

Advancing to step 8:
The number 215 fits into 1175 5 times, leaving a remainder of 100.
Write down 5 as next digit of the result. 
Result so far: 412265.0
If we take 1075 away from 1175, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 9:
If we divide 1000 by 215, we get 4 and a remainder of 140.
The next digit of our result is 4. 
Result so far: 412265.4
Deduct 860 from 1000 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Step 10:
215 can be fit into 1400 6 times, resulting in a remainder of 110.
Write down 6 as next digit of the result. 
Result so far: 412265.46
Deduct 1290 from 1400 and we're left with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Going ahead to step 11:
215 can be fit into 1100 5 times, resulting in a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 412265.465
Subtracting 1075 from 1100 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 12:
215 can be fit into 250 1 times, resulting in a remainder of 35.
Write down 1 as next digit of the result. 
Result so far: 412265.4651
Deduct 215 from 250 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 13:
215 goes into 350 1 times with a remainder of 135.
Put 1 as the next digit of the answer. 
Result so far: 412265.46511
The remainder is 135 after subtracting 215 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

The final result is 412265.46511 with a remainder of 0.000135.