We divide 63885135 by 507
The aim is to understand the frequency of 507 in 63885135.

Going ahead to step 1:
When dividing 6 by 507, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 507

Step 2:
When dividing 63 by 507, we get 0 with a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 63 to get 63.
Include the next digit (8) from the dividend after 63, then repeat: 638 / 507

On to step 3:
When dividing 638 by 507, we get 1 with a remainder of 131.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 507 away from 638, we end up with 131.
Fetch the next digit (8) from the dividend, attach it to 131 and continue: 1318 / 507

Moving on to step 4:
507 goes into 1318 2 times with a remainder of 304.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we take 1014 away from 1318, we end up with 304.
Include the next digit (5) from the dividend after 304, then repeat: 3045 / 507

Going ahead to step 5:
507 goes into 3045 6 times with a remainder of 3.
The number 6 becomes the next digit in our result. 
Result so far: 126.0
If we subtract 3042 from 3045, we get 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 507

Let's proceed to step 6:
The number 507 fits into 31 0 times, leaving a remainder of 31.
Record the quotient 0 as the next digit in the result. 
Result so far: 1260.0
The remainder is 31 after subtracting 0 from 31.
Grab the next digit (3) from the dividend, add it to 31, then carry on: 313 / 507

Advancing to step 7:
507 goes into 313 0 times with a remainder of 313.
Put 0 as the next digit of the answer. 
Result so far: 12600.0
If we take 0 away from 313, we end up with 313.
Bring next digit (5) of the dividend behind the 313 and repeat the process: 3135 / 507

Let's proceed to step 8:
When dividing 3135 by 507, we get 6 with a remainder of 93.
The number 6 becomes the next digit in our result. 
Result so far: 126006.0
Subtracting 3042 from 3135 leaves us with 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Advancing to step 9:
507 can be fit into 930 1 times, resulting in a remainder of 423.
Record the quotient 1 as the next digit in the result. 
Result so far: 126006.1
Deduct 507 from 930 and we're left with 423.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4230, and continue the process.

Going ahead to step 10:
507 goes into 4230 8 times with a remainder of 174.
The number 8 becomes the next digit in our result. 
Result so far: 126006.18
If we subtract 4056 from 4230, we get 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Moving on to step 11:
1740 divided by 507 is 3 with a remainder of 219.
Record the quotient 3 as the next digit in the result. 
Result so far: 126006.183
If we subtract 1521 from 1740, we get 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

Step 12:
507 can be fit into 2190 4 times, resulting in a remainder of 162.
Use 4 as the next digit of our solution. 
Result so far: 126006.1834
Deduct 2028 from 2190 and we're left with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Moving on to step 13:
507 can be fit into 1620 3 times, resulting in a remainder of 99.
Put 3 as the next digit of the answer. 
Result so far: 126006.18343
The remainder is 99 after subtracting 1521 from 1620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Going ahead to step 14:
When dividing 990 by 507, we get 1 with a remainder of 483.
Record the quotient 1 as the next digit in the result. 
Result so far: 126006.183431
Subtract 507 from 990 to get 483.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4830, and continue the process.

On to step 15:
507 can be fit into 4830 9 times, resulting in a remainder of 267.
Write down 9 as next digit of the result. 
Result so far: 126006.1834319
Subtract 4563 from 4830 to get 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

On to step 16:
507 goes into 2670 5 times with a remainder of 135.
Record the quotient 5 as the next digit in the result. 
Result so far: 126006.18343195
Subtracting 2535 from 2670 leaves us with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

After the division, we end up with 126006.18343195 and a remainder of 1.35e-07.