97871223 ÷ 386 
The aim is to understand the frequency of 386 in 97871223.

Step 1:
If we divide 9 by 386, we get 0 and a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Bring next digit (7) of the dividend behind the 9 and repeat the process: 97 / 386

On to step 2:
97 divided by 386 is 0 with a remainder of 97.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 97 to get 97.
Include the next digit (8) from the dividend after 97, then repeat: 978 / 386

Let's proceed to step 3:
386 can be fit into 978 2 times, resulting in a remainder of 206.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 772 from 978 leaves us with 206.
Fetch the next digit (7) from the dividend, attach it to 206 and continue: 2067 / 386

On to step 4:
2067 divided by 386 is 5 with a remainder of 137.
Put 5 as the next digit of the answer. 
Result so far: 25.0
The remainder is 137 after subtracting 1930 from 2067.
Bring next digit (1) of the dividend behind the 137 and repeat the process: 1371 / 386

Moving on to step 5:
When dividing 1371 by 386, we get 3 with a remainder of 213.
The next digit of our result is 3. 
Result so far: 253.0
The remainder is 213 after subtracting 1158 from 1371.
Bring next digit (2) of the dividend behind the 213 and repeat the process: 2132 / 386

On to step 6:
386 can be fit into 2132 5 times, resulting in a remainder of 202.
The number 5 becomes the next digit in our result. 
Result so far: 2535.0
Subtract 1930 from 2132 to get 202.
Take the next digit (2) from the dividend and append it to 202, then repeat: 2022 / 386

Going ahead to step 7:
If we divide 2022 by 386, we get 5 and a remainder of 92.
The next digit of our result is 5. 
Result so far: 25355.0
Subtracting 1930 from 2022 leaves us with 92.
Fetch the next digit (3) from the dividend, attach it to 92 and continue: 923 / 386

Moving on to step 8:
If we divide 923 by 386, we get 2 and a remainder of 151.
Record the quotient 2 as the next digit in the result. 
Result so far: 253552.0
If we subtract 772 from 923, we get 151.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

Step 9:
386 goes into 1510 3 times with a remainder of 352.
Put 3 as the next digit of the answer. 
Result so far: 253552.3
If we subtract 1158 from 1510, we get 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Let's proceed to step 10:
386 goes into 3520 9 times with a remainder of 46.
The number 9 becomes the next digit in our result. 
Result so far: 253552.39
Subtracting 3474 from 3520 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 11:
386 can be fit into 460 1 times, resulting in a remainder of 74.
Record the quotient 1 as the next digit in the result. 
Result so far: 253552.391
Subtracting 386 from 460 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 12:
740 divided by 386 is 1 with a remainder of 354.
Put 1 as the next digit of the answer. 
Result so far: 253552.3911
If we take 386 away from 740, we end up with 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

In conclusion, the division gives 253552.3911 with a balance of 0.00354.