42015217 ÷ 963 
The aim is to understand the frequency of 963 in 42015217.

On to step 1:
4 divided by 963 is 0 with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 963

Advancing to step 2:
When dividing 42 by 963, we get 0 with a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Grab the next digit (0) from the dividend, add it to 42, then carry on: 420 / 963

Moving on to step 3:
963 can be fit into 420 0 times, resulting in a remainder of 420.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 420 to get 420.
Fetch the next digit (1) from the dividend, attach it to 420 and continue: 4201 / 963

Advancing to step 4:
963 goes into 4201 4 times with a remainder of 349.
The next digit of our result is 4. 
Result so far: 4.0
Subtract 3852 from 4201 to get 349.
Bring next digit (5) of the dividend behind the 349 and repeat the process: 3495 / 963

On to step 5:
3495 divided by 963 is 3 with a remainder of 606.
The number 3 becomes the next digit in our result. 
Result so far: 43.0
The remainder is 606 after subtracting 2889 from 3495.
Append the next digit (2) from the dividend to 606 and continue with: 6062 / 963

Going ahead to step 6:
6062 divided by 963 is 6 with a remainder of 284.
The number 6 becomes the next digit in our result. 
Result so far: 436.0
If we take 5778 away from 6062, we end up with 284.
Grab the next digit (1) from the dividend, add it to 284, then carry on: 2841 / 963

Moving on to step 7:
If we divide 2841 by 963, we get 2 and a remainder of 915.
The number 2 becomes the next digit in our result. 
Result so far: 4362.0
Subtracting 1926 from 2841 leaves us with 915.
Fetch the next digit (7) from the dividend, attach it to 915 and continue: 9157 / 963

Moving on to step 8:
9157 divided by 963 is 9 with a remainder of 490.
The next digit of our result is 9. 
Result so far: 43629.0
Deduct 8667 from 9157 and we're left with 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Going ahead to step 9:
If we divide 4900 by 963, we get 5 and a remainder of 85.
The next digit of our result is 5. 
Result so far: 43629.5
Subtract 4815 from 4900 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Advancing to step 10:
The number 963 fits into 850 0 times, leaving a remainder of 850.
Record the quotient 0 as the next digit in the result. 
Result so far: 43629.5
If we subtract 0 from 850, we get 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8500, and continue the process.

On to step 11:
8500 divided by 963 is 8 with a remainder of 796.
Record the quotient 8 as the next digit in the result. 
Result so far: 43629.508
If we take 7704 away from 8500, we end up with 796.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7960, and continue the process.

Advancing to step 12:
7960 divided by 963 is 8 with a remainder of 256.
Record the quotient 8 as the next digit in the result. 
Result so far: 43629.5088
If we take 7704 away from 7960, we end up with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Our division results in 43629.5088 with a remaining 0.00256.