977503 divided by 87 
The aim is to understand the frequency of 87 in 977503.

Going ahead to step 1:
When dividing 9 by 87, we get 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Fetch the next digit (7) from the dividend, attach it to 9 and continue: 97 / 87

Advancing to step 2:
When dividing 97 by 87, we get 1 with a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 87 from 97 and we're left with 10.
Include the next digit (7) from the dividend after 10, then repeat: 107 / 87

Let's proceed to step 3:
87 can be fit into 107 1 times, resulting in a remainder of 20.
Write down 1 as next digit of the result. 
Result so far: 11.0
Subtract 87 from 107 to get 20.
Fetch the next digit (5) from the dividend, attach it to 20 and continue: 205 / 87

On to step 4:
If we divide 205 by 87, we get 2 and a remainder of 31.
Write down 2 as next digit of the result. 
Result so far: 112.0
Subtracting 174 from 205 leaves us with 31.
Bring next digit (0) of the dividend behind the 31 and repeat the process: 310 / 87

Let's proceed to step 5:
310 divided by 87 is 3 with a remainder of 49.
Put 3 as the next digit of the answer. 
Result so far: 1123.0
If we subtract 261 from 310, we get 49.
Append the next digit (3) from the dividend to 49 and continue with: 493 / 87

Advancing to step 6:
If we divide 493 by 87, we get 5 and a remainder of 58.
Use 5 as the next digit of our solution. 
Result so far: 11235.0
Subtract 435 from 493 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 7:
The number 87 fits into 580 6 times, leaving a remainder of 58.
The next digit of our result is 6. 
Result so far: 11235.6
The remainder is 58 after subtracting 522 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

On to step 8:
If we divide 580 by 87, we get 6 and a remainder of 58.
Write down 6 as next digit of the result. 
Result so far: 11235.66
If we subtract 522 from 580, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Our division results in 11235.66 with a remaining 0.058.