Let's divide 25143599 by 63
The aim is to understand the frequency of 63 in 25143599.

On to step 1:
If we divide 2 by 63, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 63

Going ahead to step 2:
The number 63 fits into 25 0 times, leaving a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Append the next digit (1) from the dividend to 25 and continue with: 251 / 63

Let's proceed to step 3:
63 can be fit into 251 3 times, resulting in a remainder of 62.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 189 from 251 and we're left with 62.
Grab the next digit (4) from the dividend, add it to 62, then carry on: 624 / 63

Advancing to step 4:
When dividing 624 by 63, we get 9 with a remainder of 57.
The next digit of our result is 9. 
Result so far: 39.0
The remainder is 57 after subtracting 567 from 624.
Grab the next digit (3) from the dividend, add it to 57, then carry on: 573 / 63

Advancing to step 5:
63 goes into 573 9 times with a remainder of 6.
The next digit of our result is 9. 
Result so far: 399.0
Subtract 567 from 573 to get 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 63

Let's proceed to step 6:
63 can be fit into 65 1 times, resulting in a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 3991.0
Subtracting 63 from 65 leaves us with 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 63

Step 7:
29 divided by 63 is 0 with a remainder of 29.
The next digit of our result is 0. 
Result so far: 39910.0
Deduct 0 from 29 and we're left with 29.
Fetch the next digit (9) from the dividend, attach it to 29 and continue: 299 / 63

On to step 8:
63 can be fit into 299 4 times, resulting in a remainder of 47.
Write down 4 as next digit of the result. 
Result so far: 399104.0
Subtracting 252 from 299 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 9:
The number 63 fits into 470 7 times, leaving a remainder of 29.
Record the quotient 7 as the next digit in the result. 
Result so far: 399104.7
Deduct 441 from 470 and we're left 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.

Advancing to step 10:
63 can be fit into 290 4 times, resulting in a remainder of 38.
Use 4 as the next digit of our solution. 
Result so far: 399104.74
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.

On to step 11:
63 goes into 380 6 times with a remainder of 2.
The next digit of our result is 6. 
Result so far: 399104.746
Subtract 378 from 380 to get 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 12:
If we divide 20 by 63, we get 0 and a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 399104.746
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 13:
The number 63 fits into 200 3 times, leaving a remainder of 11.
Put 3 as the next digit of the answer. 
Result so far: 399104.74603
The remainder is 11 after subtracting 189 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 14:
When dividing 110 by 63, we get 1 with a remainder of 47.
Record the quotient 1 as the next digit in the result. 
Result so far: 399104.746031
The remainder is 47 after subtracting 63 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 15:
63 can be fit into 470 7 times, resulting in a remainder of 29.
The number 7 becomes the next digit in our result. 
Result so far: 399104.7460317
Deduct 441 from 470 and we're left 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.

Advancing to step 16:
If we divide 290 by 63, we get 4 and a remainder of 38.
Use 4 as the next digit of our solution. 
Result so far: 399104.74603174
Subtract 252 from 290 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The final outcome is 399104.74603174, with a leftover of 3.8e-08.