We're dividing 403584 by 63 
The aim is to understand the frequency of 63 in 403584.

On to step 1:
The number 63 fits into 4 0 times, leaving a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 63

Advancing to step 2:
The number 63 fits into 40 0 times, leaving a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Fetch the next digit (3) from the dividend, attach it to 40 and continue: 403 / 63

Going ahead to step 3:
If we divide 403 by 63, we get 6 and a remainder of 25.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 378 from 403 leaves us with 25.
Bring next digit (5) of the dividend behind the 25 and repeat the process: 255 / 63

Advancing to step 4:
The number 63 fits into 255 4 times, leaving a remainder of 3.
Use 4 as the next digit of our solution. 
Result so far: 64.0
If we take 252 away from 255, we end up with 3.
Grab the next digit (8) from the dividend, add it to 3, then carry on: 38 / 63

Moving on to step 5:
If we divide 38 by 63, we get 0 and a remainder of 38.
The next digit of our result is 0. 
Result so far: 640.0
Subtracting 0 from 38 leaves us with 38.
Grab the next digit (4) from the dividend, add it to 38, then carry on: 384 / 63

Going ahead to step 6:
When dividing 384 by 63, we get 6 with a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 6406.0
If we take 378 away from 384, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
When dividing 60 by 63, we get 0 with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 6406.0
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 8:
63 goes into 600 9 times with a remainder of 33.
The next digit of our result is 9. 
Result so far: 6406.09
Subtracting 567 from 600 leaves us with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 9:
63 can be fit into 330 5 times, resulting in a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 6406.095
The remainder is 15 after subtracting 315 from 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 10:
63 goes into 150 2 times with a remainder of 24.
Write down 2 as next digit of the result. 
Result so far: 6406.0952
The remainder is 24 after subtracting 126 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 11:
63 can be fit into 240 3 times, resulting in a remainder of 51.
Use 3 as the next digit of our solution. 
Result so far: 6406.09523
Subtracting 189 from 240 leaves us with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Step 12:
If we divide 510 by 63, we get 8 and a remainder of 6.
Put 8 as the next digit of the answer. 
Result so far: 6406.095238
Deduct 504 from 510 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 13:
63 goes into 60 0 times with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 6406.095238
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 14:
63 goes into 600 9 times with a remainder of 33.
Write down 9 as next digit of the result. 
Result so far: 6406.09523809
If we take 567 away from 600, we end up with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Our division results in 6406.09523809 with a remaining 3.3e-08.