We're dividing 3953 by 45 
The aim is to understand the frequency of 45 in 3953.

On to step 1:
45 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 45

Advancing to step 2:
45 can be fit into 39 0 times, resulting in a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Fetch the next digit (5) from the dividend, attach it to 39 and continue: 395 / 45

Step 3:
45 goes into 395 8 times with a remainder of 35.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtract 360 from 395 to get 35.
Append the next digit (3) from the dividend to 35 and continue with: 353 / 45

Let's proceed to step 4:
The number 45 fits into 353 7 times, leaving a remainder of 38.
Record the quotient 7 as the next digit in the result. 
Result so far: 87.0
If we subtract 315 from 353, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 5:
45 can be fit into 380 8 times, resulting in a remainder of 20.
The number 8 becomes the next digit in our result. 
Result so far: 87.8
If we take 360 away from 380, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 6:
45 can be fit into 200 4 times, resulting in a remainder of 20.
The next digit of our result is 4. 
Result so far: 87.84
If we subtract 180 from 200, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 7:
The number 45 fits into 200 4 times, leaving a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 87.844
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The quotient of the division is 87.844, and the remainder is 0.002.