17401572 ÷ 72 
The aim is to understand the frequency of 72 in 17401572.

On to step 1:
1 divided by 72 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 72

Advancing to step 2:
When dividing 17 by 72, we get 0 with a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Append the next digit (4) from the dividend to 17 and continue with: 174 / 72

Advancing to step 3:
When dividing 174 by 72, we get 2 with a remainder of 30.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 144 from 174 leaves us with 30.
Grab the next digit (0) from the dividend, add it to 30, then carry on: 300 / 72

Advancing to step 4:
When dividing 300 by 72, we get 4 with a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 24.0
Subtract 288 from 300 to get 12.
Take the next digit (1) from the dividend and append it to 12, then repeat: 121 / 72

Step 5:
When dividing 121 by 72, we get 1 with a remainder of 49.
Use 1 as the next digit of our solution. 
Result so far: 241.0
Subtracting 72 from 121 leaves us with 49.
Fetch the next digit (5) from the dividend, attach it to 49 and continue: 495 / 72

Advancing to step 6:
72 can be fit into 495 6 times, resulting in a remainder of 63.
The next digit of our result is 6. 
Result so far: 2416.0
Subtract 432 from 495 to get 63.
Grab the next digit (7) from the dividend, add it to 63, then carry on: 637 / 72

Going ahead to step 7:
72 goes into 637 8 times with a remainder of 61.
Use 8 as the next digit of our solution. 
Result so far: 24168.0
Deduct 576 from 637 and we're left with 61.
Fetch the next digit (2) from the dividend, attach it to 61 and continue: 612 / 72

Advancing to step 8:
When dividing 612 by 72, we get 8 with a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 241688.0
The remainder is 36 after subtracting 576 from 612.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 9:
When dividing 360 by 72, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 241688.5
Subtracting 360 from 360 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.

Moving on to step 10:
72 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 241688.5
Deduct 0 from 0 and we're left 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.

Step 11:
When dividing 0 by 72, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 241688.5
Subtract 0 from 0 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.

The final outcome is 241688.5, with a leftover of 0.0.