513548 ÷ 87 
The aim is to understand the frequency of 87 in 513548.

Step 1:
If we divide 5 by 87, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 87

Going ahead to step 2:
87 goes into 51 0 times with a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Bring next digit (3) of the dividend behind the 51 and repeat the process: 513 / 87

Going ahead to step 3:
If we divide 513 by 87, we get 5 and a remainder of 78.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 435 from 513, we get 78.
Grab the next digit (5) from the dividend, add it to 78, then carry on: 785 / 87

Let's proceed to step 4:
When dividing 785 by 87, we get 9 with a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 59.0
Subtracting 783 from 785 leaves us with 2.
Fetch the next digit (4) from the dividend, attach it to 2 and continue: 24 / 87

On to step 5:
87 can be fit into 24 0 times, resulting in a remainder of 24.
Put 0 as the next digit of the answer. 
Result so far: 590.0
Subtracting 0 from 24 leaves us with 24.
Grab the next digit (8) from the dividend, add it to 24, then carry on: 248 / 87

Advancing to step 6:
87 can be fit into 248 2 times, resulting in a remainder of 74.
The next digit of our result is 2. 
Result so far: 5902.0
If we take 174 away from 248, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

On to step 7:
740 divided by 87 is 8 with a remainder of 44.
Put 8 as the next digit of the answer. 
Result so far: 5902.8
Deduct 696 from 740 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 8:
If we divide 440 by 87, we get 5 and a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 5902.85
Deduct 435 from 440 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 9:
87 can be fit into 50 0 times, resulting in a remainder of 50.
The next digit of our result is 0. 
Result so far: 5902.85
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 10:
87 can be fit into 500 5 times, resulting in a remainder of 65.
Use 5 as the next digit of our solution. 
Result so far: 5902.8505
If we take 435 away from 500, we end up with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 11:
The number 87 fits into 650 7 times, leaving a remainder of 41.
The next digit of our result is 7. 
Result so far: 5902.85057
Deduct 609 from 650 and we're left with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Moving on to step 12:
The number 87 fits into 410 4 times, leaving a remainder of 62.
Put 4 as the next digit of the answer. 
Result so far: 5902.850574
Subtract 348 from 410 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 13:
The number 87 fits into 620 7 times, leaving a remainder of 11.
Use 7 as the next digit of our solution. 
Result so far: 5902.8505747
Subtract 609 from 620 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 14:
87 goes into 110 1 times with a remainder of 23.
The number 1 becomes the next digit in our result. 
Result so far: 5902.85057471
If we take 87 away from 110, we end up with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

The final result is 5902.85057471 with a remainder of 2.3e-08.