We look at the division of 61284011 by 381 
The aim is to understand the frequency of 381 in 61284011.

Moving on to step 1:
If we divide 6 by 381, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 381

Going ahead to step 2:
381 can be fit into 61 0 times, resulting in a remainder of 61.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 61, we get 61.
Append the next digit (2) from the dividend to 61 and continue with: 612 / 381

Step 3:
If we divide 612 by 381, we get 1 and a remainder of 231.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 381 away from 612, we end up with 231.
Take the next digit (8) from the dividend and append it to 231, then repeat: 2318 / 381

Let's proceed to step 4:
2318 divided by 381 is 6 with a remainder of 32.
Write down 6 as next digit of the result. 
Result so far: 16.0
If we subtract 2286 from 2318, we get 32.
Take the next digit (4) from the dividend and append it to 32, then repeat: 324 / 381

Advancing to step 5:
381 can be fit into 324 0 times, resulting in a remainder of 324.
Put 0 as the next digit of the answer. 
Result so far: 160.0
Deduct 0 from 324 and we're left with 324.
Append the next digit (0) from the dividend to 324 and continue with: 3240 / 381

Going ahead to step 6:
381 goes into 3240 8 times with a remainder of 192.
The number 8 becomes the next digit in our result. 
Result so far: 1608.0
Deduct 3048 from 3240 and we're left with 192.
Take the next digit (1) from the dividend and append it to 192, then repeat: 1921 / 381

Advancing to step 7:
381 can be fit into 1921 5 times, resulting in a remainder of 16.
Put 5 as the next digit of the answer. 
Result so far: 16085.0
Subtract 1905 from 1921 to get 16.
Fetch the next digit (1) from the dividend, attach it to 16 and continue: 161 / 381

Advancing to step 8:
If we divide 161 by 381, we get 0 and a remainder of 161.
Use 0 as the next digit of our solution. 
Result so far: 160850.0
Subtracting 0 from 161 leaves us with 161.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1610, and continue the process.

Step 9:
If we divide 1610 by 381, we get 4 and a remainder of 86.
Write down 4 as next digit of the result. 
Result so far: 160850.4
Deduct 1524 from 1610 and we're left with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Step 10:
381 goes into 860 2 times with a remainder of 98.
Write down 2 as next digit of the result. 
Result so far: 160850.42
If we take 762 away from 860, we end up with 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Going ahead to step 11:
When dividing 980 by 381, we get 2 with a remainder of 218.
The number 2 becomes the next digit in our result. 
Result so far: 160850.422
Subtract 762 from 980 to get 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

After the division, we end up with 160850.422 and a remainder of 0.0218.