We divide 345865 by 81
The aim is to understand the frequency of 81 in 345865.

On to step 1:
81 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (4) from the dividend and append it to 3, then repeat: 34 / 81

Moving on to step 2:
The number 81 fits into 34 0 times, leaving a remainder of 34.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 34 after subtracting 0 from 34.
Bring next digit (5) of the dividend behind the 34 and repeat the process: 345 / 81

Let's proceed to step 3:
345 divided by 81 is 4 with a remainder of 21.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 324 from 345 and we're left with 21.
Bring next digit (8) of the dividend behind the 21 and repeat the process: 218 / 81

Moving on to step 4:
When dividing 218 by 81, we get 2 with a remainder of 56.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
Subtracting 162 from 218 leaves us with 56.
Grab the next digit (6) from the dividend, add it to 56, then carry on: 566 / 81

On to step 5:
The number 81 fits into 566 6 times, leaving a remainder of 80.
Put 6 as the next digit of the answer. 
Result so far: 426.0
If we take 486 away from 566, we end up with 80.
Take the next digit (5) from the dividend and append it to 80, then repeat: 805 / 81

Step 6:
81 goes into 805 9 times with a remainder of 76.
Put 9 as the next digit of the answer. 
Result so far: 4269.0
If we take 729 away from 805, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 7:
If we divide 760 by 81, we get 9 and a remainder of 31.
The number 9 becomes the next digit in our result. 
Result so far: 4269.9
Deduct 729 from 760 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 8:
When dividing 310 by 81, we get 3 with a remainder of 67.
Write down 3 as next digit of the result. 
Result so far: 4269.93
Subtracting 243 from 310 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Going ahead to step 9:
The number 81 fits into 670 8 times, leaving a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 4269.938
If we take 648 away from 670, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 10:
81 can be fit into 220 2 times, resulting in a remainder of 58.
Put 2 as the next digit of the answer. 
Result so far: 4269.9382
If we take 162 away from 220, we end up with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 11:
If we divide 580 by 81, we get 7 and a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 4269.93827
Deduct 567 from 580 and we're left with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 12:
81 can be fit into 130 1 times, resulting in a remainder of 49.
The next digit of our result is 1. 
Result so far: 4269.938271
Subtracting 81 from 130 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 13:
The number 81 fits into 490 6 times, leaving a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 4269.9382716
If we subtract 486 from 490, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 14:
The number 81 fits into 40 0 times, leaving a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 4269.9382716
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The quotient of the division is 4269.9382716, and the remainder is 4e-08.