We look at the division of 603429 by 63 
The aim is to understand the frequency of 63 in 603429.

Advancing to step 1:
The number 63 fits into 6 0 times, leaving a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (0) from the dividend to 6 and continue with: 60 / 63

Advancing to step 2:
63 goes into 60 0 times with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 60, we end up with 60.
Take the next digit (3) from the dividend and append it to 60, then repeat: 603 / 63

Moving on to step 3:
63 can be fit into 603 9 times, resulting in a remainder of 36.
Use 9 as the next digit of our solution. 
Result so far: 9.0
The remainder is 36 after subtracting 567 from 603.
Fetch the next digit (4) from the dividend, attach it to 36 and continue: 364 / 63

Advancing to step 4:
63 can be fit into 364 5 times, resulting in a remainder of 49.
Write down 5 as next digit of the result. 
Result so far: 95.0
The remainder is 49 after subtracting 315 from 364.
Bring next digit (2) of the dividend behind the 49 and repeat the process: 492 / 63

Step 5:
492 divided by 63 is 7 with a remainder of 51.
The number 7 becomes the next digit in our result. 
Result so far: 957.0
Subtract 441 from 492 to get 51.
Fetch the next digit (9) from the dividend, attach it to 51 and continue: 519 / 63

On to step 6:
63 goes into 519 8 times with a remainder of 15.
The number 8 becomes the next digit in our result. 
Result so far: 9578.0
Subtracting 504 from 519 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 7:
The number 63 fits into 150 2 times, leaving a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 9578.2
Deduct 126 from 150 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 8:
63 can be fit into 240 3 times, resulting in a remainder of 51.
Write down 3 as next digit of the result. 
Result so far: 9578.23
Deduct 189 from 240 and we're left 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 9:
The number 63 fits into 510 8 times, leaving a remainder of 6.
The next digit of our result is 8. 
Result so far: 9578.238
If we take 504 away from 510, 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.

Step 10:
If we divide 60 by 63, we get 0 and a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 9578.238
If we take 0 away from 60, we end up 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.

Moving on to step 11:
63 goes into 600 9 times with a remainder of 33.
Record the quotient 9 as the next digit in the result. 
Result so far: 9578.23809
Subtract 567 from 600 to get 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 12:
If we divide 330 by 63, we get 5 and a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 9578.238095
If we take 315 away from 330, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 13:
If we divide 150 by 63, we get 2 and a remainder of 24.
Record the quotient 2 as the next digit in the result. 
Result so far: 9578.2380952
Deduct 126 from 150 and we're left with 24.
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 14:
The number 63 fits into 240 3 times, leaving a remainder of 51.
Put 3 as the next digit of the answer. 
Result so far: 9578.23809523
If we take 189 away from 240, we end up 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.

The quotient of the division is 9578.23809523, and the remainder is 5.1e-08.