643269 ÷ 63 
The aim is to understand the frequency of 63 in 643269.

Going ahead to step 1:
If we divide 6 by 63, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (4) from the dividend and append it to 6, then repeat: 64 / 63

Let's proceed to step 2:
If we divide 64 by 63, we get 1 and a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 63 from 64 leaves us with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 63

On to step 3:
The number 63 fits into 13 0 times, leaving a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtract 0 from 13 to get 13.
Append the next digit (2) from the dividend to 13 and continue with: 132 / 63

Step 4:
The number 63 fits into 132 2 times, leaving a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 102.0
Subtracting 126 from 132 leaves us with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 63

Going ahead to step 5:
When dividing 66 by 63, we get 1 with a remainder of 3.
Write down 1 as next digit of the result. 
Result so far: 1021.0
Subtract 63 from 66 to get 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 63

Let's proceed to step 6:
When dividing 39 by 63, we get 0 with a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 10210.0
If we take 0 away from 39, we end up 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 7:
When dividing 390 by 63, we get 6 with a remainder of 12.
Write down 6 as next digit of the result. 
Result so far: 10210.6
If we take 378 away from 390, we end up with 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 8:
63 goes into 120 1 times with a remainder of 57.
The number 1 becomes the next digit in our result. 
Result so far: 10210.61
If we subtract 63 from 120, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 9:
The number 63 fits into 570 9 times, leaving a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 10210.619
Deduct 567 from 570 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 10:
30 divided by 63 is 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 10210.619
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 11:
The number 63 fits into 300 4 times, leaving a remainder of 48.
Write down 4 as next digit of the result. 
Result so far: 10210.61904
If we take 252 away from 300, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 12:
If we divide 480 by 63, we get 7 and a remainder of 39.
Write down 7 as next digit of the result. 
Result so far: 10210.619047
Subtract 441 from 480 to get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

On to step 13:
The number 63 fits into 390 6 times, leaving a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 10210.6190476
Subtract 378 from 390 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.

Let's proceed to step 14:
120 divided by 63 is 1 with a remainder of 57.
Write down 1 as next digit of the result. 
Result so far: 10210.61904761
If we take 63 away from 120, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

After the division, we end up with 10210.61904761 and a remainder of 5.7e-08.