We look at the division of 253835 by 72 
The aim is to understand the frequency of 72 in 253835.

Going ahead to step 1:
The number 72 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 72

Step 2:
72 can be fit into 25 0 times, resulting in a remainder of 25.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 25, we get 25.
Grab the next digit (3) from the dividend, add it to 25, then carry on: 253 / 72

Going ahead to step 3:
The number 72 fits into 253 3 times, leaving a remainder of 37.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtracting 216 from 253 leaves us with 37.
Grab the next digit (8) from the dividend, add it to 37, then carry on: 378 / 72

Going ahead to step 4:
If we divide 378 by 72, we get 5 and a remainder of 18.
Record the quotient 5 as the next digit in the result. 
Result so far: 35.0
Subtract 360 from 378 to get 18.
Fetch the next digit (3) from the dividend, attach it to 18 and continue: 183 / 72

Advancing to step 5:
When dividing 183 by 72, we get 2 with a remainder of 39.
The next digit of our result is 2. 
Result so far: 352.0
The remainder is 39 after subtracting 144 from 183.
Bring next digit (5) of the dividend behind the 39 and repeat the process: 395 / 72

Advancing to step 6:
72 goes into 395 5 times with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 3525.0
If we take 360 away from 395, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 7:
The number 72 fits into 350 4 times, leaving a remainder of 62.
Record the quotient 4 as the next digit in the result. 
Result so far: 3525.4
The remainder is 62 after subtracting 288 from 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 8:
72 can be fit into 620 8 times, resulting in a remainder of 44.
Put 8 as the next digit of the answer. 
Result so far: 3525.48
If we subtract 576 from 620, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead 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: 3525.486
Deduct 432 from 440 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.

On to step 10:
80 divided by 72 is 1 with a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 3525.4861
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.

Moving on to step 11:
The number 72 fits into 80 1 times, leaving a remainder of 8.
The next digit of our result is 1. 
Result so far: 3525.48611
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.

Our division results in 3525.48611 with a remaining 8e-06.