We divide 263593 by 81
The aim is to understand the frequency of 81 in 263593.

Step 1:
81 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 81

Let's proceed to step 2:
26 divided by 81 is 0 with a remainder of 26.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 26 to get 26.
Bring next digit (3) of the dividend behind the 26 and repeat the process: 263 / 81

On to step 3:
81 can be fit into 263 3 times, resulting in a remainder of 20.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 243 from 263 to get 20.
Bring next digit (5) of the dividend behind the 20 and repeat the process: 205 / 81

Moving on to step 4:
205 divided by 81 is 2 with a remainder of 43.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
Subtracting 162 from 205 leaves us with 43.
Grab the next digit (9) from the dividend, add it to 43, then carry on: 439 / 81

Going ahead to step 5:
81 can be fit into 439 5 times, resulting in a remainder of 34.
Put 5 as the next digit of the answer. 
Result so far: 325.0
The remainder is 34 after subtracting 405 from 439.
Bring next digit (3) of the dividend behind the 34 and repeat the process: 343 / 81

Moving on to step 6:
If we divide 343 by 81, we get 4 and a remainder of 19.
Record the quotient 4 as the next digit in the result. 
Result so far: 3254.0
Subtract 324 from 343 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 7:
When dividing 190 by 81, we get 2 with a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 3254.2
If we take 162 away from 190, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 8:
280 divided by 81 is 3 with a remainder of 37.
Use 3 as the next digit of our solution. 
Result so far: 3254.23
If we take 243 away from 280, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 9:
370 divided by 81 is 4 with a remainder of 46.
Put 4 as the next digit of the answer. 
Result so far: 3254.234
Subtracting 324 from 370 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 10:
If we divide 460 by 81, we get 5 and a remainder of 55.
Put 5 as the next digit of the answer. 
Result so far: 3254.2345
Subtracting 405 from 460 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Advancing to step 11:
550 divided by 81 is 6 with a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 3254.23456
Deduct 486 from 550 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 12:
If we divide 640 by 81, we get 7 and a remainder of 73.
Record the quotient 7 as the next digit in the result. 
Result so far: 3254.234567
Subtracting 567 from 640 leaves us with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Let's proceed to step 13:
When dividing 730 by 81, we get 9 with a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 3254.2345679
Deduct 729 from 730 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 14:
When dividing 10 by 81, we get 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 3254.2345679
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Our division results in 3254.2345679 with a remaining 1e-08.