Let's divide 81873951 by 427
The aim is to understand the frequency of 427 in 81873951.

Going ahead to step 1:
427 can be fit into 8 0 times, resulting in a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 427

Step 2:
The number 427 fits into 81 0 times, leaving a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Fetch the next digit (8) from the dividend, attach it to 81 and continue: 818 / 427

Let's proceed to step 3:
When dividing 818 by 427, we get 1 with a remainder of 391.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 427 from 818 and we're left with 391.
Take the next digit (7) from the dividend and append it to 391, then repeat: 3917 / 427

Going ahead to step 4:
3917 divided by 427 is 9 with a remainder of 74.
The next digit of our result is 9. 
Result so far: 19.0
If we take 3843 away from 3917, we end up with 74.
Grab the next digit (3) from the dividend, add it to 74, then carry on: 743 / 427

Step 5:
427 goes into 743 1 times with a remainder of 316.
Write down 1 as next digit of the result. 
Result so far: 191.0
If we take 427 away from 743, we end up with 316.
Grab the next digit (9) from the dividend, add it to 316, then carry on: 3169 / 427

On to step 6:
427 can be fit into 3169 7 times, resulting in a remainder of 180.
The next digit of our result is 7. 
Result so far: 1917.0
The remainder is 180 after subtracting 2989 from 3169.
Append the next digit (5) from the dividend to 180 and continue with: 1805 / 427

Moving on to step 7:
1805 divided by 427 is 4 with a remainder of 97.
The number 4 becomes the next digit in our result. 
Result so far: 19174.0
The remainder is 97 after subtracting 1708 from 1805.
Include the next digit (1) from the dividend after 97, then repeat: 971 / 427

Advancing to step 8:
If we divide 971 by 427, we get 2 and a remainder of 117.
The next digit of our result is 2. 
Result so far: 191742.0
Subtract 854 from 971 to get 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Moving on to step 9:
427 can be fit into 1170 2 times, resulting in a remainder of 316.
Write down 2 as next digit of the result. 
Result so far: 191742.2
Subtract 854 from 1170 to get 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Going ahead to step 10:
427 goes into 3160 7 times with a remainder of 171.
The number 7 becomes the next digit in our result. 
Result so far: 191742.27
Subtract 2989 from 3160 to get 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Let's proceed to step 11:
The number 427 fits into 1710 4 times, leaving a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 191742.274
If we subtract 1708 from 1710, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 12:
427 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 191742.274
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 13:
427 goes into 200 0 times with a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 191742.274
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The final result is 191742.274 with a remainder of 0.0002.