We look at the division of 30637701 by 72 
The aim is to understand the frequency of 72 in 30637701.

Advancing to step 1:
When dividing 3 by 72, we get 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 72

Moving on to step 2:
When dividing 30 by 72, we get 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 30 to get 30.
Grab the next digit (6) from the dividend, add it to 30, then carry on: 306 / 72

Step 3:
If we divide 306 by 72, we get 4 and a remainder of 18.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 288 from 306 and we're left with 18.
Grab the next digit (3) from the dividend, add it to 18, then carry on: 183 / 72

Step 4:
When dividing 183 by 72, we get 2 with a remainder of 39.
Record the quotient 2 as the next digit in the result. 
Result so far: 42.0
Deduct 144 from 183 and we're left with 39.
Grab the next digit (7) from the dividend, add it to 39, then carry on: 397 / 72

Step 5:
If we divide 397 by 72, we get 5 and a remainder of 37.
Record the quotient 5 as the next digit in the result. 
Result so far: 425.0
Subtracting 360 from 397 leaves us with 37.
Include the next digit (7) from the dividend after 37, then repeat: 377 / 72

Let's proceed to step 6:
377 divided by 72 is 5 with a remainder of 17.
Put 5 as the next digit of the answer. 
Result so far: 4255.0
Deduct 360 from 377 and we're left with 17.
Append the next digit (0) from the dividend to 17 and continue with: 170 / 72

Let's proceed to step 7:
The number 72 fits into 170 2 times, leaving a remainder of 26.
Use 2 as the next digit of our solution. 
Result so far: 42552.0
The remainder is 26 after subtracting 144 from 170.
Grab the next digit (1) from the dividend, add it to 26, then carry on: 261 / 72

Step 8:
When dividing 261 by 72, we get 3 with a remainder of 45.
Record the quotient 3 as the next digit in the result. 
Result so far: 425523.0
Deduct 216 from 261 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 9:
450 divided by 72 is 6 with a remainder of 18.
Put 6 as the next digit of the answer. 
Result so far: 425523.6
If we take 432 away from 450, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 10:
The number 72 fits into 180 2 times, leaving a remainder of 36.
The next digit of our result is 2. 
Result so far: 425523.62
If we subtract 144 from 180, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 11:
The number 72 fits into 360 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 425523.625
Subtract 360 from 360 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 12:
When dividing 0 by 72, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 425523.625
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 13:
0 divided by 72 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 425523.625
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 425523.625, and the remainder is 0.0.