We're dividing 870371 by 88 
The aim is to understand the frequency of 88 in 870371.

Step 1:
88 goes into 8 0 times with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 88

On to step 2:
87 divided by 88 is 0 with a remainder of 87.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 87, we get 87.
Include the next digit (0) from the dividend after 87, then repeat: 870 / 88

Going ahead to step 3:
870 divided by 88 is 9 with a remainder of 78.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtracting 792 from 870 leaves us with 78.
Append the next digit (3) from the dividend to 78 and continue with: 783 / 88

Let's proceed to step 4:
783 divided by 88 is 8 with a remainder of 79.
Put 8 as the next digit of the answer. 
Result so far: 98.0
Subtract 704 from 783 to get 79.
Grab the next digit (7) from the dividend, add it to 79, then carry on: 797 / 88

Let's proceed to step 5:
88 can be fit into 797 9 times, resulting in a remainder of 5.
The next digit of our result is 9. 
Result so far: 989.0
Deduct 792 from 797 and we're left with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 88

Let's proceed to step 6:
88 goes into 51 0 times with a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 9890.0
Subtract 0 from 51 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Step 7:
When dividing 510 by 88, we get 5 with a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 9890.5
Deduct 440 from 510 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 8:
88 goes into 700 7 times with a remainder of 84.
Record the quotient 7 as the next digit in the result. 
Result so far: 9890.57
Subtract 616 from 700 to get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Advancing to step 9:
88 can be fit into 840 9 times, resulting in a remainder of 48.
The number 9 becomes the next digit in our result. 
Result so far: 9890.579
Subtract 792 from 840 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 10:
If we divide 480 by 88, we get 5 and a remainder of 40.
The next digit of our result is 5. 
Result so far: 9890.5795
Deduct 440 from 480 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 11:
The number 88 fits into 400 4 times, leaving a remainder of 48.
Put 4 as the next digit of the answer. 
Result so far: 9890.57954
Subtract 352 from 400 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 12:
When dividing 480 by 88, we get 5 with a remainder of 40.
The number 5 becomes the next digit in our result. 
Result so far: 9890.579545
If we subtract 440 from 480, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 13:
The number 88 fits into 400 4 times, leaving a remainder of 48.
The next digit of our result is 4. 
Result so far: 9890.5795454
Subtract 352 from 400 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 14:
480 divided by 88 is 5 with a remainder of 40.
The next digit of our result is 5. 
Result so far: 9890.57954545
If we subtract 440 from 480, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

After the division, we end up with 9890.57954545 and a remainder of 4e-08.