We're dividing 66503 by 63 
The aim is to understand the frequency of 63 in 66503.

Advancing to step 1:
When dividing 6 by 63, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 63

On to step 2:
If we divide 66 by 63, we get 1 and a remainder of 3.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 63 from 66, we get 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 63

On to step 3:
If we divide 35 by 63, we get 0 and a remainder of 35.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
The remainder is 35 after subtracting 0 from 35.
Bring next digit (0) of the dividend behind the 35 and repeat the process: 350 / 63

Step 4:
63 goes into 350 5 times with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 105.0
Subtracting 315 from 350 leaves us with 35.
Take the next digit (3) from the dividend and append it to 35, then repeat: 353 / 63

Going ahead to step 5:
If we divide 353 by 63, we get 5 and a remainder of 38.
The next digit of our result is 5. 
Result so far: 1055.0
Deduct 315 from 353 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 6:
380 divided by 63 is 6 with a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 1055.6
Deduct 378 from 380 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
If we divide 20 by 63, we get 0 and a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 1055.6
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 8:
The number 63 fits into 200 3 times, leaving a remainder of 11.
Write down 3 as next digit of the result. 
Result so far: 1055.603
Subtract 189 from 200 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 9:
When dividing 110 by 63, we get 1 with a remainder of 47.
Use 1 as the next digit of our solution. 
Result so far: 1055.6031
If we subtract 63 from 110, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 10:
If we divide 470 by 63, we get 7 and a remainder of 29.
Use 7 as the next digit of our solution. 
Result so far: 1055.60317
If we take 441 away from 470, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 11:
63 can be fit into 290 4 times, resulting in a remainder of 38.
The number 4 becomes the next digit in our result. 
Result so far: 1055.603174
The remainder is 38 after subtracting 252 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 12:
If we divide 380 by 63, we get 6 and a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 1055.6031746
Deduct 378 from 380 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 13:
20 divided by 63 is 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 1055.6031746
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The quotient of the division is 1055.6031746, and the remainder is 2e-08.