We look at the division of 801843 by 63 
The aim is to understand the frequency of 63 in 801843.

Let's proceed to step 1:
When dividing 8 by 63, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 63

Advancing to step 2:
The number 63 fits into 80 1 times, leaving a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 63 from 80 and we're left with 17.
Grab the next digit (1) from the dividend, add it to 17, then carry on: 171 / 63

Going ahead to step 3:
171 divided by 63 is 2 with a remainder of 45.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we take 126 away from 171, we end up with 45.
Take the next digit (8) from the dividend and append it to 45, then repeat: 458 / 63

Advancing to step 4:
458 divided by 63 is 7 with a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 127.0
If we take 441 away from 458, we end up with 17.
Include the next digit (4) from the dividend after 17, then repeat: 174 / 63

Going ahead to step 5:
174 divided by 63 is 2 with a remainder of 48.
The next digit of our result is 2. 
Result so far: 1272.0
Subtract 126 from 174 to get 48.
Take the next digit (3) from the dividend and append it to 48, then repeat: 483 / 63

Step 6:
63 can be fit into 483 7 times, resulting in a remainder of 42.
Write down 7 as next digit of the result. 
Result so far: 12727.0
If we subtract 441 from 483, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 7:
If we divide 420 by 63, we get 6 and a remainder of 42.
Write down 6 as next digit of the result. 
Result so far: 12727.6
Subtracting 378 from 420 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 8:
When dividing 420 by 63, we get 6 with a remainder of 42.
Use 6 as the next digit of our solution. 
Result so far: 12727.66
The remainder is 42 after subtracting 378 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

The quotient of the division is 12727.66, and the remainder is 0.042.