We divide 287308 by 81
The aim is to understand the frequency of 81 in 287308.

Let's proceed to step 1:
81 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 81

Moving on to step 2:
The number 81 fits into 28 0 times, leaving a remainder of 28.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 28 leaves us with 28.
Include the next digit (7) from the dividend after 28, then repeat: 287 / 81

Step 3:
If we divide 287 by 81, we get 3 and a remainder of 44.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 243 away from 287, we end up with 44.
Bring next digit (3) of the dividend behind the 44 and repeat the process: 443 / 81

Going ahead to step 4:
If we divide 443 by 81, we get 5 and a remainder of 38.
Record the quotient 5 as the next digit in the result. 
Result so far: 35.0
If we take 405 away from 443, we end up with 38.
Append the next digit (0) from the dividend to 38 and continue with: 380 / 81

On to step 5:
380 divided by 81 is 4 with a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 354.0
If we take 324 away from 380, we end up with 56.
Append the next digit (8) from the dividend to 56 and continue with: 568 / 81

Advancing to step 6:
If we divide 568 by 81, we get 7 and a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 3547.0
Deduct 567 from 568 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.

Step 7:
81 goes into 10 0 times with a remainder of 10.
The next digit of our result is 0. 
Result so far: 3547.0
If we subtract 0 from 10, we 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.

On to step 8:
When dividing 100 by 81, we get 1 with a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 3547.01
Subtract 81 from 100 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.

Moving on to step 9:
190 divided by 81 is 2 with a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 3547.012
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.

Advancing to step 10:
If we divide 280 by 81, we get 3 and a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 3547.0123
The remainder is 37 after subtracting 243 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 11:
81 goes into 370 4 times with a remainder of 46.
The number 4 becomes the next digit in our result. 
Result so far: 3547.01234
If we take 324 away from 370, we end up 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.

Moving on to step 12:
The number 81 fits into 460 5 times, leaving a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 3547.012345
Deduct 405 from 460 and we're left 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 13:
550 divided by 81 is 6 with a remainder of 64.
The next digit of our result is 6. 
Result so far: 3547.0123456
If we take 486 away from 550, we end up 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.

Let's proceed to step 14:
When dividing 640 by 81, we get 7 with a remainder of 73.
The next digit of our result is 7. 
Result so far: 3547.01234567
Subtract 567 from 640 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

The quotient of the division is 3547.01234567, and the remainder is 7.3e-08.