Let's divide 31531 by 75
The aim is to understand the frequency of 75 in 31531.

Let's proceed to step 1:
75 goes into 3 0 times with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 75

Going ahead to step 2:
If we divide 31 by 75, we get 0 and a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 31, we end up with 31.
Take the next digit (5) from the dividend and append it to 31, then repeat: 315 / 75

Advancing to step 3:
If we divide 315 by 75, we get 4 and a remainder of 15.
The next digit of our result is 4. 
Result so far: 4.0
The remainder is 15 after subtracting 300 from 315.
Append the next digit (3) from the dividend to 15 and continue with: 153 / 75

On to step 4:
The number 75 fits into 153 2 times, leaving a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 42.0
If we subtract 150 from 153, we get 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 75

Advancing to step 5:
31 divided by 75 is 0 with a remainder of 31.
Use 0 as the next digit of our solution. 
Result so far: 420.0
If we take 0 away from 31, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 6:
When dividing 310 by 75, we get 4 with a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 420.4
If we subtract 300 from 310, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 7:
The number 75 fits into 100 1 times, leaving a remainder of 25.
Put 1 as the next digit of the answer. 
Result so far: 420.41
If we take 75 away from 100, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 8:
250 divided by 75 is 3 with a remainder of 25.
The number 3 becomes the next digit in our result. 
Result so far: 420.413
The remainder is 25 after subtracting 225 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 9:
If we divide 250 by 75, we get 3 and a remainder of 25.
Record the quotient 3 as the next digit in the result. 
Result so far: 420.4133
Deduct 225 from 250 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

After the division, we end up with 420.4133 and a remainder of 0.00025.