486552 ÷ 87 
The aim is to understand the frequency of 87 in 486552.

On to step 1:
The number 87 fits into 4 0 times, leaving a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (8) from the dividend and append it to 4, then repeat: 48 / 87

Step 2:
The number 87 fits into 48 0 times, leaving a remainder of 48.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 48 and we're left with 48.
Take the next digit (6) from the dividend and append it to 48, then repeat: 486 / 87

On to step 3:
If we divide 486 by 87, we get 5 and a remainder of 51.
The next digit of our result is 5. 
Result so far: 5.0
The remainder is 51 after subtracting 435 from 486.
Bring next digit (5) of the dividend behind the 51 and repeat the process: 515 / 87

Going ahead to step 4:
87 can be fit into 515 5 times, resulting in a remainder of 80.
Use 5 as the next digit of our solution. 
Result so far: 55.0
The remainder is 80 after subtracting 435 from 515.
Grab the next digit (5) from the dividend, add it to 80, then carry on: 805 / 87

Going ahead to step 5:
87 goes into 805 9 times with a remainder of 22.
Put 9 as the next digit of the answer. 
Result so far: 559.0
If we subtract 783 from 805, we get 22.
Grab the next digit (2) from the dividend, add it to 22, then carry on: 222 / 87

Step 6:
The number 87 fits into 222 2 times, leaving a remainder of 48.
The next digit of our result is 2. 
Result so far: 5592.0
Deduct 174 from 222 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 7:
If we divide 480 by 87, we get 5 and a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 5592.5
Subtracting 435 from 480 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 8:
If we divide 450 by 87, we get 5 and a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 5592.55
Subtracting 435 from 450 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Our division results in 5592.55 with a remaining 0.015.