81797611 ÷ 395 
The aim is to understand the frequency of 395 in 81797611.

Step 1:
395 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 395

Advancing to step 2:
81 divided by 395 is 0 with a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Fetch the next digit (7) from the dividend, attach it to 81 and continue: 817 / 395

Step 3:
395 can be fit into 817 2 times, resulting in a remainder of 27.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 790 from 817 leaves us with 27.
Take the next digit (9) from the dividend and append it to 27, then repeat: 279 / 395

Advancing to step 4:
395 can be fit into 279 0 times, resulting in a remainder of 279.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
If we take 0 away from 279, we end up with 279.
Grab the next digit (7) from the dividend, add it to 279, then carry on: 2797 / 395

Moving on to step 5:
395 goes into 2797 7 times with a remainder of 32.
Use 7 as the next digit of our solution. 
Result so far: 207.0
Subtracting 2765 from 2797 leaves us with 32.
Append the next digit (6) from the dividend to 32 and continue with: 326 / 395

Moving on to step 6:
When dividing 326 by 395, we get 0 with a remainder of 326.
Record the quotient 0 as the next digit in the result. 
Result so far: 2070.0
If we take 0 away from 326, we end up with 326.
Take the next digit (1) from the dividend and append it to 326, then repeat: 3261 / 395

On to step 7:
395 can be fit into 3261 8 times, resulting in a remainder of 101.
Record the quotient 8 as the next digit in the result. 
Result so far: 20708.0
Deduct 3160 from 3261 and we're left with 101.
Bring next digit (1) of the dividend behind the 101 and repeat the process: 1011 / 395

On to step 8:
The number 395 fits into 1011 2 times, leaving a remainder of 221.
The number 2 becomes the next digit in our result. 
Result so far: 207082.0
If we take 790 away from 1011, we end up with 221.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2210, and continue the process.

On to step 9:
2210 divided by 395 is 5 with a remainder of 235.
The number 5 becomes the next digit in our result. 
Result so far: 207082.5
Subtract 1975 from 2210 to get 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Let's proceed to step 10:
395 can be fit into 2350 5 times, resulting in a remainder of 375.
Write down 5 as next digit of the result. 
Result so far: 207082.55
If we subtract 1975 from 2350, we get 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

The final result is 207082.55 with a remainder of 0.375.