63412050 ÷ 81 
The aim is to understand the frequency of 81 in 63412050.

On to step 1:
6 divided by 81 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 81

Let's proceed to step 2:
81 can be fit into 63 0 times, resulting in a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 63 and we're left with 63.
Fetch the next digit (4) from the dividend, attach it to 63 and continue: 634 / 81

Moving on to step 3:
81 can be fit into 634 7 times, resulting in a remainder of 67.
Put 7 as the next digit of the answer. 
Result so far: 7.0
The remainder is 67 after subtracting 567 from 634.
Include the next digit (1) from the dividend after 67, then repeat: 671 / 81

Going ahead to step 4:
The number 81 fits into 671 8 times, leaving a remainder of 23.
Use 8 as the next digit of our solution. 
Result so far: 78.0
The remainder is 23 after subtracting 648 from 671.
Bring next digit (2) of the dividend behind the 23 and repeat the process: 232 / 81

Moving on to step 5:
232 divided by 81 is 2 with a remainder of 70.
Write down 2 as next digit of the result. 
Result so far: 782.0
Subtracting 162 from 232 leaves us with 70.
Bring next digit (0) of the dividend behind the 70 and repeat the process: 700 / 81

Advancing to step 6:
If we divide 700 by 81, we get 8 and a remainder of 52.
Use 8 as the next digit of our solution. 
Result so far: 7828.0
Deduct 648 from 700 and we're left with 52.
Take the next digit (5) from the dividend and append it to 52, then repeat: 525 / 81

Advancing to step 7:
The number 81 fits into 525 6 times, leaving a remainder of 39.
The number 6 becomes the next digit in our result. 
Result so far: 78286.0
The remainder is 39 after subtracting 486 from 525.
Grab the next digit (0) from the dividend, add it to 39, then carry on: 390 / 81

Let's proceed to step 8:
If we divide 390 by 81, we get 4 and a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 782864.0
The remainder is 66 after subtracting 324 from 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 9:
If we divide 660 by 81, we get 8 and a remainder of 12.
The next digit of our result is 8. 
Result so far: 782864.8
If we subtract 648 from 660, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 10:
120 divided by 81 is 1 with a remainder of 39.
Put 1 as the next digit of the answer. 
Result so far: 782864.81
The remainder is 39 after subtracting 81 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 11:
If we divide 390 by 81, we get 4 and a remainder of 66.
The number 4 becomes the next digit in our result. 
Result so far: 782864.814
If we subtract 324 from 390, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Going ahead to step 12:
When dividing 660 by 81, we get 8 with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 782864.8148
Subtract 648 from 660 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 13:
81 goes into 120 1 times with a remainder of 39.
Use 1 as the next digit of our solution. 
Result so far: 782864.81481
Subtracting 81 from 120 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 14:
If we divide 390 by 81, we get 4 and a remainder of 66.
Record the quotient 4 as the next digit in the result. 
Result so far: 782864.814814
Subtracting 324 from 390 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Let's proceed to step 15:
660 divided by 81 is 8 with a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 782864.8148148
If we subtract 648 from 660, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 16:
The number 81 fits into 120 1 times, leaving a remainder of 39.
Put 1 as the next digit of the answer. 
Result so far: 782864.81481481
Deduct 81 from 120 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

The quotient of the division is 782864.81481481, and the remainder is 3.9e-08.