We divide 72990766 by 525
The aim is to understand the frequency of 525 in 72990766.

Step 1:
525 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 525

Let's proceed to step 2:
If we divide 72 by 525, we get 0 and a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 72, we end up with 72.
Fetch the next digit (9) from the dividend, attach it to 72 and continue: 729 / 525

On to step 3:
If we divide 729 by 525, we get 1 and a remainder of 204.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 204 after subtracting 525 from 729.
Append the next digit (9) from the dividend to 204 and continue with: 2049 / 525

Step 4:
525 goes into 2049 3 times with a remainder of 474.
The next digit of our result is 3. 
Result so far: 13.0
If we take 1575 away from 2049, we end up with 474.
Take the next digit (0) from the dividend and append it to 474, then repeat: 4740 / 525

Step 5:
525 can be fit into 4740 9 times, resulting in a remainder of 15.
Use 9 as the next digit of our solution. 
Result so far: 139.0
Deduct 4725 from 4740 and we're left with 15.
Take the next digit (7) from the dividend and append it to 15, then repeat: 157 / 525

Moving on to step 6:
525 can be fit into 157 0 times, resulting in a remainder of 157.
The number 0 becomes the next digit in our result. 
Result so far: 1390.0
Subtract 0 from 157 to get 157.
Fetch the next digit (6) from the dividend, attach it to 157 and continue: 1576 / 525

Step 7:
1576 divided by 525 is 3 with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 13903.0
The remainder is 1 after subtracting 1575 from 1576.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 525

Moving on to step 8:
If we divide 16 by 525, we get 0 and a remainder of 16.
Use 0 as the next digit of our solution. 
Result so far: 139030.0
The remainder is 16 after subtracting 0 from 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 9:
The number 525 fits into 160 0 times, leaving a remainder of 160.
Write down 0 as next digit of the result. 
Result so far: 139030.0
Subtract 0 from 160 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 10:
The number 525 fits into 1600 3 times, leaving a remainder of 25.
Write down 3 as next digit of the result. 
Result so far: 139030.03
Subtract 1575 from 1600 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 11:
The number 525 fits into 250 0 times, leaving a remainder of 250.
Record the quotient 0 as the next digit in the result. 
Result so far: 139030.03
If we take 0 away from 250, we end up with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Going ahead to step 12:
The number 525 fits into 2500 4 times, leaving a remainder of 400.
Put 4 as the next digit of the answer. 
Result so far: 139030.0304
Deduct 2100 from 2500 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 13:
525 goes into 4000 7 times with a remainder of 325.
The number 7 becomes the next digit in our result. 
Result so far: 139030.03047
Deduct 3675 from 4000 and we're left with 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

On to step 14:
When dividing 3250 by 525, we get 6 with a remainder of 100.
Write down 6 as next digit of the result. 
Result so far: 139030.030476
Subtracting 3150 from 3250 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 15:
525 can be fit into 1000 1 times, resulting in a remainder of 475.
The next digit of our result is 1. 
Result so far: 139030.0304761
If we subtract 525 from 1000, we get 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

On to step 16:
If we divide 4750 by 525, we get 9 and a remainder of 25.
The next digit of our result is 9. 
Result so far: 139030.03047619
Subtract 4725 from 4750 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

In conclusion, the division gives 139030.03047619 with a balance of 2.5e-08.