We look at the division of 65469543 by 381 
The aim is to understand the frequency of 381 in 65469543.

Going ahead to step 1:
381 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 381

Let's proceed to step 2:
65 divided by 381 is 0 with a remainder of 65.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 65, we get 65.
Include the next digit (4) from the dividend after 65, then repeat: 654 / 381

Going ahead to step 3:
654 divided by 381 is 1 with a remainder of 273.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 381 from 654, we get 273.
Include the next digit (6) from the dividend after 273, then repeat: 2736 / 381

Going ahead to step 4:
If we divide 2736 by 381, we get 7 and a remainder of 69.
Write down 7 as next digit of the result. 
Result so far: 17.0
Subtracting 2667 from 2736 leaves us with 69.
Grab the next digit (9) from the dividend, add it to 69, then carry on: 699 / 381

Advancing to step 5:
381 goes into 699 1 times with a remainder of 318.
Record the quotient 1 as the next digit in the result. 
Result so far: 171.0
Deduct 381 from 699 and we're left with 318.
Fetch the next digit (5) from the dividend, attach it to 318 and continue: 3185 / 381

Advancing to step 6:
When dividing 3185 by 381, we get 8 with a remainder of 137.
Use 8 as the next digit of our solution. 
Result so far: 1718.0
Subtracting 3048 from 3185 leaves us with 137.
Append the next digit (4) from the dividend to 137 and continue with: 1374 / 381

Let's proceed to step 7:
381 goes into 1374 3 times with a remainder of 231.
The next digit of our result is 3. 
Result so far: 17183.0
If we take 1143 away from 1374, we end up with 231.
Take the next digit (3) from the dividend and append it to 231, then repeat: 2313 / 381

Going ahead to step 8:
381 can be fit into 2313 6 times, resulting in a remainder of 27.
The next digit of our result is 6. 
Result so far: 171836.0
The remainder is 27 after subtracting 2286 from 2313.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 9:
381 can be fit into 270 0 times, resulting in a remainder of 270.
The number 0 becomes the next digit in our result. 
Result so far: 171836.0
Subtracting 0 from 270 leaves us with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Moving on to step 10:
2700 divided by 381 is 7 with a remainder of 33.
Use 7 as the next digit of our solution. 
Result so far: 171836.07
If we take 2667 away from 2700, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 11:
If we divide 330 by 381, we get 0 and a remainder of 330.
Record the quotient 0 as the next digit in the result. 
Result so far: 171836.07
Subtract 0 from 330 to get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Moving on to step 12:
If we divide 3300 by 381, we get 8 and a remainder of 252.
Use 8 as the next digit of our solution. 
Result so far: 171836.0708
If we subtract 3048 from 3300, we get 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Step 13:
When dividing 2520 by 381, we get 6 with a remainder of 234.
The next digit of our result is 6. 
Result so far: 171836.07086
If we take 2286 away from 2520, we end up with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

On to step 14:
2340 divided by 381 is 6 with a remainder of 54.
Use 6 as the next digit of our solution. 
Result so far: 171836.070866
Deduct 2286 from 2340 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Our division results in 171836.070866 with a remaining 5.4e-06.