We divide 72300137 by 660
The aim is to understand the frequency of 660 in 72300137.

On to step 1:
The number 660 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 660

On to step 2:
660 goes into 72 0 times with a remainder of 72.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 72, we get 72.
Fetch the next digit (3) from the dividend, attach it to 72 and continue: 723 / 660

On to step 3:
If we divide 723 by 660, we get 1 and a remainder of 63.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 660 from 723 leaves us with 63.
Grab the next digit (0) from the dividend, add it to 63, then carry on: 630 / 660

Advancing to step 4:
If we divide 630 by 660, we get 0 and a remainder of 630.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtracting 0 from 630 leaves us with 630.
Take the next digit (0) from the dividend and append it to 630, then repeat: 6300 / 660

Advancing to step 5:
When dividing 6300 by 660, we get 9 with a remainder of 360.
The number 9 becomes the next digit in our result. 
Result so far: 109.0
The remainder is 360 after subtracting 5940 from 6300.
Grab the next digit (1) from the dividend, add it to 360, then carry on: 3601 / 660

Let's proceed to step 6:
3601 divided by 660 is 5 with a remainder of 301.
Put 5 as the next digit of the answer. 
Result so far: 1095.0
Deduct 3300 from 3601 and we're left with 301.
Append the next digit (3) from the dividend to 301 and continue with: 3013 / 660

Let's proceed to step 7:
3013 divided by 660 is 4 with a remainder of 373.
The next digit of our result is 4. 
Result so far: 10954.0
Subtracting 2640 from 3013 leaves us with 373.
Grab the next digit (7) from the dividend, add it to 373, then carry on: 3737 / 660

On to step 8:
660 can be fit into 3737 5 times, resulting in a remainder of 437.
The number 5 becomes the next digit in our result. 
Result so far: 109545.0
The remainder is 437 after subtracting 3300 from 3737.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

On to step 9:
660 goes into 4370 6 times with a remainder of 410.
The number 6 becomes the next digit in our result. 
Result so far: 109545.6
Subtract 3960 from 4370 to get 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

On to step 10:
When dividing 4100 by 660, we get 6 with a remainder of 140.
The number 6 becomes the next digit in our result. 
Result so far: 109545.66
Subtract 3960 from 4100 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

After the division, we end up with 109545.66 and a remainder of 0.14.