86831436 ÷ 393 
The aim is to understand the frequency of 393 in 86831436.

Advancing to step 1:
393 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 393

Step 2:
If we divide 86 by 393, we get 0 and a remainder of 86.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Bring next digit (8) of the dividend behind the 86 and repeat the process: 868 / 393

Advancing to step 3:
If we divide 868 by 393, we get 2 and a remainder of 82.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 786 away from 868, we end up with 82.
Take the next digit (3) from the dividend and append it to 82, then repeat: 823 / 393

Step 4:
The number 393 fits into 823 2 times, leaving a remainder of 37.
The next digit of our result is 2. 
Result so far: 22.0
If we subtract 786 from 823, we get 37.
Include the next digit (1) from the dividend after 37, then repeat: 371 / 393

Let's proceed to step 5:
When dividing 371 by 393, we get 0 with a remainder of 371.
The next digit of our result is 0. 
Result so far: 220.0
Subtracting 0 from 371 leaves us with 371.
Bring next digit (4) of the dividend behind the 371 and repeat the process: 3714 / 393

Moving on to step 6:
If we divide 3714 by 393, we get 9 and a remainder of 177.
Write down 9 as next digit of the result. 
Result so far: 2209.0
Subtracting 3537 from 3714 leaves us with 177.
Take the next digit (3) from the dividend and append it to 177, then repeat: 1773 / 393

Step 7:
The number 393 fits into 1773 4 times, leaving a remainder of 201.
Write down 4 as next digit of the result. 
Result so far: 22094.0
If we take 1572 away from 1773, we end up with 201.
Bring next digit (6) of the dividend behind the 201 and repeat the process: 2016 / 393

Let's proceed to step 8:
393 goes into 2016 5 times with a remainder of 51.
The next digit of our result is 5. 
Result so far: 220945.0
Deduct 1965 from 2016 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Let's proceed to step 9:
The number 393 fits into 510 1 times, leaving a remainder of 117.
Put 1 as the next digit of the answer. 
Result so far: 220945.1
Deduct 393 from 510 and we're left with 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Advancing to step 10:
When dividing 1170 by 393, we get 2 with a remainder of 384.
Put 2 as the next digit of the answer. 
Result so far: 220945.12
The remainder is 384 after subtracting 786 from 1170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Let's proceed to step 11:
3840 divided by 393 is 9 with a remainder of 303.
The number 9 becomes the next digit in our result. 
Result so far: 220945.129
Deduct 3537 from 3840 and we're left with 303.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3030, and continue the process.

Step 12:
3030 divided by 393 is 7 with a remainder of 279.
Record the quotient 7 as the next digit in the result. 
Result so far: 220945.1297
Subtracting 2751 from 3030 leaves us with 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

Step 13:
393 can be fit into 2790 7 times, resulting in a remainder of 39.
Put 7 as the next digit of the answer. 
Result so far: 220945.12977
Deduct 2751 from 2790 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

The final result is 220945.12977 with a remainder of 3.9e-05.