Let's divide 13905836 by 507
The aim is to understand the frequency of 507 in 13905836.

Going ahead to step 1:
The number 507 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 507

Let's proceed to step 2:
The number 507 fits into 13 0 times, leaving a remainder of 13.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 13 and we're left with 13.
Append the next digit (9) from the dividend to 13 and continue with: 139 / 507

Advancing to step 3:
139 divided by 507 is 0 with a remainder of 139.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 139, we get 139.
Take the next digit (0) from the dividend and append it to 139, then repeat: 1390 / 507

Moving on to step 4:
If we divide 1390 by 507, we get 2 and a remainder of 376.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 1014 from 1390, we get 376.
Include the next digit (5) from the dividend after 376, then repeat: 3765 / 507

On to step 5:
The number 507 fits into 3765 7 times, leaving a remainder of 216.
Record the quotient 7 as the next digit in the result. 
Result so far: 27.0
Subtracting 3549 from 3765 leaves us with 216.
Bring next digit (8) of the dividend behind the 216 and repeat the process: 2168 / 507

Step 6:
The number 507 fits into 2168 4 times, leaving a remainder of 140.
Write down 4 as next digit of the result. 
Result so far: 274.0
Deduct 2028 from 2168 and we're left with 140.
Grab the next digit (3) from the dividend, add it to 140, then carry on: 1403 / 507

On to step 7:
When dividing 1403 by 507, we get 2 with a remainder of 389.
Use 2 as the next digit of our solution. 
Result so far: 2742.0
Subtracting 1014 from 1403 leaves us with 389.
Fetch the next digit (6) from the dividend, attach it to 389 and continue: 3896 / 507

Moving on to step 8:
3896 divided by 507 is 7 with a remainder of 347.
Put 7 as the next digit of the answer. 
Result so far: 27427.0
Deduct 3549 from 3896 and we're left with 347.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3470, and continue the process.

Advancing to step 9:
When dividing 3470 by 507, we get 6 with a remainder of 428.
The number 6 becomes the next digit in our result. 
Result so far: 27427.6
Subtract 3042 from 3470 to get 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

Going ahead to step 10:
The number 507 fits into 4280 8 times, leaving a remainder of 224.
Use 8 as the next digit of our solution. 
Result so far: 27427.68
The remainder is 224 after subtracting 4056 from 4280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Moving on to step 11:
If we divide 2240 by 507, we get 4 and a remainder of 212.
The number 4 becomes the next digit in our result. 
Result so far: 27427.684
Deduct 2028 from 2240 and we're left with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Let's proceed to step 12:
2120 divided by 507 is 4 with a remainder of 92.
Put 4 as the next digit of the answer. 
Result so far: 27427.6844
Deduct 2028 from 2120 and we're left with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

After the division, we end up with 27427.6844 and a remainder of 0.00092.