120382 ÷ 87 
The aim is to understand the frequency of 87 in 120382.

On to step 1:
87 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 87

Moving on to step 2:
If we divide 12 by 87, we get 0 and a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Include the next digit (0) from the dividend after 12, then repeat: 120 / 87

Moving on to step 3:
If we divide 120 by 87, we get 1 and a remainder of 33.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 87 from 120 to get 33.
Append the next digit (3) from the dividend to 33 and continue with: 333 / 87

Going ahead to step 4:
87 can be fit into 333 3 times, resulting in a remainder of 72.
Put 3 as the next digit of the answer. 
Result so far: 13.0
If we subtract 261 from 333, we get 72.
Take the next digit (8) from the dividend and append it to 72, then repeat: 728 / 87

Advancing to step 5:
If we divide 728 by 87, we get 8 and a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 138.0
Subtract 696 from 728 to get 32.
Grab the next digit (2) from the dividend, add it to 32, then carry on: 322 / 87

On to step 6:
The number 87 fits into 322 3 times, leaving a remainder of 61.
Put 3 as the next digit of the answer. 
Result so far: 1383.0
If we take 261 away from 322, we end up with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 7:
The number 87 fits into 610 7 times, leaving a remainder of 1.
The next digit of our result is 7. 
Result so far: 1383.7
The remainder is 1 after subtracting 609 from 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 8:
87 can be fit into 10 0 times, resulting in a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 1383.7
If we take 0 away from 10, we end up with 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 9:
87 goes into 100 1 times with a remainder of 13.
The number 1 becomes the next digit in our result. 
Result so far: 1383.701
The remainder is 13 after subtracting 87 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Let's proceed to step 10:
The number 87 fits into 130 1 times, leaving a remainder of 43.
Put 1 as the next digit of the answer. 
Result so far: 1383.7011
If we take 87 away from 130, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

The quotient of the division is 1383.7011, and the remainder is 0.00043.