We divide 723999 by 75
The aim is to understand the frequency of 75 in 723999.

Advancing to step 1:
If we divide 7 by 75, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 75

Moving on to step 2:
When dividing 72 by 75, we get 0 with a remainder of 72.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 72, we end up with 72.
Fetch the next digit (3) from the dividend, attach it to 72 and continue: 723 / 75

Advancing to step 3:
If we divide 723 by 75, we get 9 and a remainder of 48.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtract 675 from 723 to get 48.
Include the next digit (9) from the dividend after 48, then repeat: 489 / 75

Step 4:
489 divided by 75 is 6 with a remainder of 39.
Put 6 as the next digit of the answer. 
Result so far: 96.0
If we take 450 away from 489, we end up with 39.
Grab the next digit (9) from the dividend, add it to 39, then carry on: 399 / 75

Going ahead to step 5:
The number 75 fits into 399 5 times, leaving a remainder of 24.
Record the quotient 5 as the next digit in the result. 
Result so far: 965.0
If we take 375 away from 399, we end up with 24.
Take the next digit (9) from the dividend and append it to 24, then repeat: 249 / 75

Step 6:
75 goes into 249 3 times with a remainder of 24.
Record the quotient 3 as the next digit in the result. 
Result so far: 9653.0
If we subtract 225 from 249, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 7:
75 can be fit into 240 3 times, resulting in a remainder of 15.
Write down 3 as next digit of the result. 
Result so far: 9653.3
Subtract 225 from 240 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 8:
When dividing 150 by 75, we get 2 with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 9653.32
If we take 150 away from 150, we end up 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 9:
If we divide 0 by 75, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 9653.32
If we subtract 0 from 0, we 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.

Moving on to step 10:
0 divided by 75 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 9653.32
If we take 0 away from 0, we end up 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.

The final result is 9653.32 with a remainder of 0.0.