We're dividing 87091088 by 356 
The aim is to understand the frequency of 356 in 87091088.

Going ahead to step 1:
When dividing 8 by 356, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 356

On to step 2:
When dividing 87 by 356, we get 0 with a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 87 after subtracting 0 from 87.
Grab the next digit (0) from the dividend, add it to 87, then carry on: 870 / 356

On to step 3:
356 goes into 870 2 times with a remainder of 158.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 712 from 870 to get 158.
Include the next digit (9) from the dividend after 158, then repeat: 1589 / 356

Advancing to step 4:
If we divide 1589 by 356, we get 4 and a remainder of 165.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
Subtract 1424 from 1589 to get 165.
Append the next digit (1) from the dividend to 165 and continue with: 1651 / 356

On to step 5:
356 goes into 1651 4 times with a remainder of 227.
Use 4 as the next digit of our solution. 
Result so far: 244.0
Subtract 1424 from 1651 to get 227.
Fetch the next digit (0) from the dividend, attach it to 227 and continue: 2270 / 356

Let's proceed to step 6:
When dividing 2270 by 356, we get 6 with a remainder of 134.
Use 6 as the next digit of our solution. 
Result so far: 2446.0
The remainder is 134 after subtracting 2136 from 2270.
Grab the next digit (8) from the dividend, add it to 134, then carry on: 1348 / 356

Step 7:
If we divide 1348 by 356, we get 3 and a remainder of 280.
The number 3 becomes the next digit in our result. 
Result so far: 24463.0
Subtracting 1068 from 1348 leaves us with 280.
Fetch the next digit (8) from the dividend, attach it to 280 and continue: 2808 / 356

Moving on to step 8:
When dividing 2808 by 356, we get 7 with a remainder of 316.
Use 7 as the next digit of our solution. 
Result so far: 244637.0
The remainder is 316 after subtracting 2492 from 2808.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

On to step 9:
3160 divided by 356 is 8 with a remainder of 312.
Use 8 as the next digit of our solution. 
Result so far: 244637.8
Subtracting 2848 from 3160 leaves us with 312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

Moving on to step 10:
If we divide 3120 by 356, we get 8 and a remainder of 272.
The next digit of our result is 8. 
Result so far: 244637.88
Deduct 2848 from 3120 and we're left with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

After the division, we end up with 244637.88 and a remainder of 0.272.