Let's divide 63351 by 81
The aim is to understand the frequency of 81 in 63351.

Going ahead to step 1:
If we divide 6 by 81, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 81

Let's proceed to step 2:
81 goes into 63 0 times with a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Append the next digit (3) from the dividend to 63 and continue with: 633 / 81

Step 3:
When dividing 633 by 81, we get 7 with a remainder of 66.
The next digit of our result is 7. 
Result so far: 7.0
If we take 567 away from 633, we end up with 66.
Fetch the next digit (5) from the dividend, attach it to 66 and continue: 665 / 81

On to step 4:
81 can be fit into 665 8 times, resulting in a remainder of 17.
The next digit of our result is 8. 
Result so far: 78.0
If we take 648 away from 665, we end up with 17.
Include the next digit (1) from the dividend after 17, then repeat: 171 / 81

Going ahead to step 5:
The number 81 fits into 171 2 times, leaving a remainder of 9.
Record the quotient 2 as the next digit in the result. 
Result so far: 782.0
If we take 162 away from 171, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 6:
If we divide 90 by 81, we get 1 and a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 782.1
Subtracting 81 from 90 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Let's proceed to step 7:
If we divide 90 by 81, we get 1 and a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 782.11
If we take 81 away from 90, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

The quotient of the division is 782.11, and the remainder is 0.009.