Let's divide 71523836 by 507
The aim is to understand the frequency of 507 in 71523836.

On to step 1:
If we divide 7 by 507, we get 0 and a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 507

Going ahead to step 2:
The number 507 fits into 71 0 times, leaving a remainder of 71.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 71 leaves us with 71.
Include the next digit (5) from the dividend after 71, then repeat: 715 / 507

Moving on to step 3:
507 goes into 715 1 times with a remainder of 208.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 507 from 715, we get 208.
Include the next digit (2) from the dividend after 208, then repeat: 2082 / 507

On to step 4:
The number 507 fits into 2082 4 times, leaving a remainder of 54.
Put 4 as the next digit of the answer. 
Result so far: 14.0
If we subtract 2028 from 2082, we get 54.
Grab the next digit (3) from the dividend, add it to 54, then carry on: 543 / 507

Let's proceed to step 5:
543 divided by 507 is 1 with a remainder of 36.
Record the quotient 1 as the next digit in the result. 
Result so far: 141.0
Subtract 507 from 543 to get 36.
Take the next digit (8) from the dividend and append it to 36, then repeat: 368 / 507

On to step 6:
If we divide 368 by 507, we get 0 and a remainder of 368.
Write down 0 as next digit of the result. 
Result so far: 1410.0
Subtract 0 from 368 to get 368.
Bring next digit (3) of the dividend behind the 368 and repeat the process: 3683 / 507

On to step 7:
3683 divided by 507 is 7 with a remainder of 134.
Use 7 as the next digit of our solution. 
Result so far: 14107.0
Subtract 3549 from 3683 to get 134.
Append the next digit (6) from the dividend to 134 and continue with: 1346 / 507

Moving on to step 8:
507 can be fit into 1346 2 times, resulting in a remainder of 332.
Use 2 as the next digit of our solution. 
Result so far: 141072.0
Deduct 1014 from 1346 and we're left with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Let's proceed to step 9:
When dividing 3320 by 507, we get 6 with a remainder of 278.
Record the quotient 6 as the next digit in the result. 
Result so far: 141072.6
If we subtract 3042 from 3320, we get 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

Step 10:
507 goes into 2780 5 times with a remainder of 245.
The number 5 becomes the next digit in our result. 
Result so far: 141072.65
Deduct 2535 from 2780 and we're left with 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

On to step 11:
The number 507 fits into 2450 4 times, leaving a remainder of 422.
Record the quotient 4 as the next digit in the result. 
Result so far: 141072.654
If we subtract 2028 from 2450, we get 422.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4220, and continue the process.

On to step 12:
507 can be fit into 4220 8 times, resulting in a remainder of 164.
Use 8 as the next digit of our solution. 
Result so far: 141072.6548
Subtracting 4056 from 4220 leaves us with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Going ahead to step 13:
507 can be fit into 1640 3 times, resulting in a remainder of 119.
Record the quotient 3 as the next digit in the result. 
Result so far: 141072.65483
If we take 1521 away from 1640, we end up with 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Advancing to step 14:
507 goes into 1190 2 times with a remainder of 176.
The number 2 becomes the next digit in our result. 
Result so far: 141072.654832
Subtracting 1014 from 1190 leaves us with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Step 15:
507 can be fit into 1760 3 times, resulting in a remainder of 239.
Put 3 as the next digit of the answer. 
Result so far: 141072.6548323
Subtract 1521 from 1760 to get 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

On to step 16:
2390 divided by 507 is 4 with a remainder of 362.
Record the quotient 4 as the next digit in the result. 
Result so far: 141072.65483234
If we take 2028 away from 2390, we end up with 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

After the division, we end up with 141072.65483234 and a remainder of 3.62e-07.