We look at the division of 523961 by 72 
The aim is to understand the frequency of 72 in 523961.

Moving on to step 1:
72 goes into 5 0 times with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 72

Moving on to step 2:
72 goes into 52 0 times with a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 52 after subtracting 0 from 52.
Take the next digit (3) from the dividend and append it to 52, then repeat: 523 / 72

Moving on to step 3:
523 divided by 72 is 7 with a remainder of 19.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtract 504 from 523 to get 19.
Grab the next digit (9) from the dividend, add it to 19, then carry on: 199 / 72

Let's proceed to step 4:
72 goes into 199 2 times with a remainder of 55.
The number 2 becomes the next digit in our result. 
Result so far: 72.0
If we take 144 away from 199, we end up with 55.
Fetch the next digit (6) from the dividend, attach it to 55 and continue: 556 / 72

Advancing to step 5:
72 goes into 556 7 times with a remainder of 52.
Write down 7 as next digit of the result. 
Result so far: 727.0
Subtracting 504 from 556 leaves us with 52.
Grab the next digit (1) from the dividend, add it to 52, then carry on: 521 / 72

Let's proceed to step 6:
72 goes into 521 7 times with a remainder of 17.
Write down 7 as next digit of the result. 
Result so far: 7277.0
Deduct 504 from 521 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 7:
170 divided by 72 is 2 with a remainder of 26.
Record the quotient 2 as the next digit in the result. 
Result so far: 7277.2
Subtracting 144 from 170 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 8:
72 can be fit into 260 3 times, resulting in a remainder of 44.
The next digit of our result is 3. 
Result so far: 7277.23
Deduct 216 from 260 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 9:
If we divide 440 by 72, we get 6 and a remainder of 8.
The next digit of our result is 6. 
Result so far: 7277.236
The remainder is 8 after subtracting 432 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
The number 72 fits into 80 1 times, leaving a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 7277.2361
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 11:
When dividing 80 by 72, we get 1 with a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 7277.23611
If we take 72 away from 80, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 7277.23611 and a remainder of 8e-06.