18638081 ÷ 781 
The aim is to understand the frequency of 781 in 18638081.

Advancing to step 1:
1 divided by 781 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 781

Going ahead to step 2:
781 can be fit into 18 0 times, resulting in a remainder of 18.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 18, we end up with 18.
Take the next digit (6) from the dividend and append it to 18, then repeat: 186 / 781

Going ahead to step 3:
If we divide 186 by 781, we get 0 and a remainder of 186.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 186 after subtracting 0 from 186.
Include the next digit (3) from the dividend after 186, then repeat: 1863 / 781

Step 4:
781 can be fit into 1863 2 times, resulting in a remainder of 301.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 1562 from 1863 and we're left with 301.
Include the next digit (8) from the dividend after 301, then repeat: 3018 / 781

Moving on to step 5:
The number 781 fits into 3018 3 times, leaving a remainder of 675.
The next digit of our result is 3. 
Result so far: 23.0
Deduct 2343 from 3018 and we're left with 675.
Fetch the next digit (0) from the dividend, attach it to 675 and continue: 6750 / 781

Step 6:
The number 781 fits into 6750 8 times, leaving a remainder of 502.
Write down 8 as next digit of the result. 
Result so far: 238.0
Subtract 6248 from 6750 to get 502.
Bring next digit (8) of the dividend behind the 502 and repeat the process: 5028 / 781

Let's proceed to step 7:
781 can be fit into 5028 6 times, resulting in a remainder of 342.
The number 6 becomes the next digit in our result. 
Result so far: 2386.0
If we subtract 4686 from 5028, we get 342.
Append the next digit (1) from the dividend to 342 and continue with: 3421 / 781

Going ahead to step 8:
781 goes into 3421 4 times with a remainder of 297.
The number 4 becomes the next digit in our result. 
Result so far: 23864.0
Deduct 3124 from 3421 and we're left with 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Advancing to step 9:
The number 781 fits into 2970 3 times, leaving a remainder of 627.
Put 3 as the next digit of the answer. 
Result so far: 23864.3
The remainder is 627 after subtracting 2343 from 2970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6270, and continue the process.

Advancing to step 10:
781 can be fit into 6270 8 times, resulting in a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 23864.38
If we subtract 6248 from 6270, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 11:
When dividing 220 by 781, we get 0 with a remainder of 220.
Write down 0 as next digit of the result. 
Result so far: 23864.38
Subtracting 0 from 220 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Moving on to step 12:
If we divide 2200 by 781, we get 2 and a remainder of 638.
Put 2 as the next digit of the answer. 
Result so far: 23864.3802
Deduct 1562 from 2200 and we're left with 638.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6380, and continue the process.

Let's proceed to step 13:
6380 divided by 781 is 8 with a remainder of 132.
The next digit of our result is 8. 
Result so far: 23864.38028
If we subtract 6248 from 6380, we get 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Let's proceed to step 14:
781 goes into 1320 1 times with a remainder of 539.
Record the quotient 1 as the next digit in the result. 
Result so far: 23864.380281
If we take 781 away from 1320, we end up with 539.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5390, and continue the process.

Moving on to step 15:
5390 divided by 781 is 6 with a remainder of 704.
Use 6 as the next digit of our solution. 
Result so far: 23864.3802816
If we subtract 4686 from 5390, we get 704.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

On to step 16:
7040 divided by 781 is 9 with a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 23864.38028169
Deduct 7029 from 7040 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

The final result is 23864.38028169 with a remainder of 1.1e-08.