861215 ÷ 63 
The aim is to understand the frequency of 63 in 861215.

On to step 1:
The number 63 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 63

Moving on to step 2:
The number 63 fits into 86 1 times, leaving a remainder of 23.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 63 from 86, we get 23.
Fetch the next digit (1) from the dividend, attach it to 23 and continue: 231 / 63

Going ahead to step 3:
231 divided by 63 is 3 with a remainder of 42.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Subtract 189 from 231 to get 42.
Fetch the next digit (2) from the dividend, attach it to 42 and continue: 422 / 63

Going ahead to step 4:
63 goes into 422 6 times with a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 136.0
Subtracting 378 from 422 leaves us with 44.
Fetch the next digit (1) from the dividend, attach it to 44 and continue: 441 / 63

Step 5:
63 can be fit into 441 7 times, resulting in a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 1367.0
Deduct 441 from 441 and we're left with 0.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 63

Advancing to step 6:
63 can be fit into 5 0 times, resulting in a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 13670.0
Subtract 0 from 5 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 7:
63 can be fit into 50 0 times, resulting in a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 13670.0
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 8:
63 goes into 500 7 times with a remainder of 59.
Record the quotient 7 as the next digit in the result. 
Result so far: 13670.07
Subtracting 441 from 500 leaves us with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Step 9:
63 can be fit into 590 9 times, resulting in a remainder of 23.
Write down 9 as next digit of the result. 
Result so far: 13670.079
If we subtract 567 from 590, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 10:
When dividing 230 by 63, we get 3 with a remainder of 41.
Write down 3 as next digit of the result. 
Result so far: 13670.0793
If we subtract 189 from 230, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

On to step 11:
63 can be fit into 410 6 times, resulting in a remainder of 32.
Record the quotient 6 as the next digit in the result. 
Result so far: 13670.07936
Subtract 378 from 410 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 12:
63 goes into 320 5 times with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 13670.079365
If we take 315 away from 320, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 13:
63 goes into 50 0 times with a remainder of 50.
The next digit of our result is 0. 
Result so far: 13670.079365
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 14:
500 divided by 63 is 7 with a remainder of 59.
The next digit of our result is 7. 
Result so far: 13670.07936507
If we take 441 away from 500, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

After the division, we end up with 13670.07936507 and a remainder of 5.9e-08.