We divide 84215714 by 507
The aim is to understand the frequency of 507 in 84215714.

Going ahead to step 1:
8 divided by 507 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (4) from the dividend to 8 and continue with: 84 / 507

Moving on to step 2:
84 divided by 507 is 0 with a remainder of 84.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 84 to get 84.
Append the next digit (2) from the dividend to 84 and continue with: 842 / 507

Moving on to step 3:
842 divided by 507 is 1 with a remainder of 335.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 507 from 842 to get 335.
Append the next digit (1) from the dividend to 335 and continue with: 3351 / 507

Moving on to step 4:
3351 divided by 507 is 6 with a remainder of 309.
Write down 6 as next digit of the result. 
Result so far: 16.0
Subtract 3042 from 3351 to get 309.
Take the next digit (5) from the dividend and append it to 309, then repeat: 3095 / 507

Let's proceed to step 5:
If we divide 3095 by 507, we get 6 and a remainder of 53.
The number 6 becomes the next digit in our result. 
Result so far: 166.0
Deduct 3042 from 3095 and we're left with 53.
Append the next digit (7) from the dividend to 53 and continue with: 537 / 507

Moving on to step 6:
507 can be fit into 537 1 times, resulting in a remainder of 30.
The next digit of our result is 1. 
Result so far: 1661.0
Subtract 507 from 537 to get 30.
Take the next digit (1) from the dividend and append it to 30, then repeat: 301 / 507

Let's proceed to step 7:
507 goes into 301 0 times with a remainder of 301.
Write down 0 as next digit of the result. 
Result so far: 16610.0
Deduct 0 from 301 and we're left with 301.
Take the next digit (4) from the dividend and append it to 301, then repeat: 3014 / 507

On to step 8:
When dividing 3014 by 507, we get 5 with a remainder of 479.
The next digit of our result is 5. 
Result so far: 166105.0
The remainder is 479 after subtracting 2535 from 3014.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4790, and continue the process.

Moving on to step 9:
If we divide 4790 by 507, we get 9 and a remainder of 227.
Put 9 as the next digit of the answer. 
Result so far: 166105.9
The remainder is 227 after subtracting 4563 from 4790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Step 10:
507 can be fit into 2270 4 times, resulting in a remainder of 242.
Put 4 as the next digit of the answer. 
Result so far: 166105.94
Subtracting 2028 from 2270 leaves us with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

On to step 11:
The number 507 fits into 2420 4 times, leaving a remainder of 392.
The next digit of our result is 4. 
Result so far: 166105.944
If we subtract 2028 from 2420, we get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

The final result is 166105.944 with a remainder of 0.0392.