We look at the division of 375118 by 72 
The aim is to understand the frequency of 72 in 375118.

On to step 1:
The number 72 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 72

Moving on to step 2:
72 goes into 37 0 times with a remainder of 37.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 37, we end up with 37.
Fetch the next digit (5) from the dividend, attach it to 37 and continue: 375 / 72

Going ahead to step 3:
The number 72 fits into 375 5 times, leaving a remainder of 15.
The next digit of our result is 5. 
Result so far: 5.0
Subtracting 360 from 375 leaves us with 15.
Bring next digit (1) of the dividend behind the 15 and repeat the process: 151 / 72

Advancing to step 4:
72 can be fit into 151 2 times, resulting in a remainder of 7.
Use 2 as the next digit of our solution. 
Result so far: 52.0
Subtract 144 from 151 to get 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 72

Step 5:
72 goes into 71 0 times with a remainder of 71.
Record the quotient 0 as the next digit in the result. 
Result so far: 520.0
Subtract 0 from 71 to get 71.
Append the next digit (8) from the dividend to 71 and continue with: 718 / 72

Advancing to step 6:
If we divide 718 by 72, we get 9 and a remainder of 70.
The next digit of our result is 9. 
Result so far: 5209.0
Subtracting 648 from 718 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 7:
72 can be fit into 700 9 times, resulting in a remainder of 52.
Use 9 as the next digit of our solution. 
Result so far: 5209.9
Subtracting 648 from 700 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 8:
When dividing 520 by 72, we get 7 with a remainder of 16.
Write down 7 as next digit of the result. 
Result so far: 5209.97
Subtracting 504 from 520 leaves us with 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 72 fits into 160 2 times, leaving a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 5209.972
Subtracting 144 from 160 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 10:
If we divide 160 by 72, we get 2 and a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 5209.9722
Subtracting 144 from 160 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 5209.9722, with a leftover of 0.00016.