88936397 divided by 309 
The aim is to understand the frequency of 309 in 88936397.

On to step 1:
309 goes into 8 0 times with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (8) from the dividend, add it to 8, then carry on: 88 / 309

Moving on to step 2:
88 divided by 309 is 0 with a remainder of 88.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 88, we end up with 88.
Grab the next digit (9) from the dividend, add it to 88, then carry on: 889 / 309

On to step 3:
When dividing 889 by 309, we get 2 with a remainder of 271.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 618 away from 889, we end up with 271.
Append the next digit (3) from the dividend to 271 and continue with: 2713 / 309

Moving on to step 4:
309 can be fit into 2713 8 times, resulting in a remainder of 241.
Put 8 as the next digit of the answer. 
Result so far: 28.0
Subtract 2472 from 2713 to get 241.
Include the next digit (6) from the dividend after 241, then repeat: 2416 / 309

Let's proceed to step 5:
If we divide 2416 by 309, we get 7 and a remainder of 253.
Use 7 as the next digit of our solution. 
Result so far: 287.0
Subtract 2163 from 2416 to get 253.
Include the next digit (3) from the dividend after 253, then repeat: 2533 / 309

Moving on to step 6:
If we divide 2533 by 309, we get 8 and a remainder of 61.
Put 8 as the next digit of the answer. 
Result so far: 2878.0
If we take 2472 away from 2533, we end up with 61.
Include the next digit (9) from the dividend after 61, then repeat: 619 / 309

Advancing to step 7:
If we divide 619 by 309, we get 2 and a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 28782.0
Deduct 618 from 619 and we're left with 1.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 309

Let's proceed to step 8:
If we divide 17 by 309, we get 0 and a remainder of 17.
The next digit of our result is 0. 
Result so far: 287820.0
Subtracting 0 from 17 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 9:
170 divided by 309 is 0 with a remainder of 170.
Write down 0 as next digit of the result. 
Result so far: 287820.0
Subtracting 0 from 170 leaves us with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Moving on to step 10:
If we divide 1700 by 309, we get 5 and a remainder of 155.
Record the quotient 5 as the next digit in the result. 
Result so far: 287820.05
The remainder is 155 after subtracting 1545 from 1700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Going ahead to step 11:
1550 divided by 309 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 287820.055
The remainder is 5 after subtracting 1545 from 1550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The quotient of the division is 287820.055, and the remainder is 0.0005.