673780 ÷ 87 
The aim is to understand the frequency of 87 in 673780.

On to step 1:
87 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (7) from the dividend to 6 and continue with: 67 / 87

Let's proceed to step 2:
When dividing 67 by 87, we get 0 with a remainder of 67.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 67 after subtracting 0 from 67.
Take the next digit (3) from the dividend and append it to 67, then repeat: 673 / 87

Going ahead to step 3:
87 can be fit into 673 7 times, resulting in a remainder of 64.
The next digit of our result is 7. 
Result so far: 7.0
The remainder is 64 after subtracting 609 from 673.
Take the next digit (7) from the dividend and append it to 64, then repeat: 647 / 87

Step 4:
When dividing 647 by 87, we get 7 with a remainder of 38.
Write down 7 as next digit of the result. 
Result so far: 77.0
If we subtract 609 from 647, we get 38.
Grab the next digit (8) from the dividend, add it to 38, then carry on: 388 / 87

Moving on to step 5:
87 can be fit into 388 4 times, resulting in a remainder of 40.
Use 4 as the next digit of our solution. 
Result so far: 774.0
Subtracting 348 from 388 leaves us with 40.
Bring next digit (0) of the dividend behind the 40 and repeat the process: 400 / 87

Advancing to step 6:
87 can be fit into 400 4 times, resulting in a remainder of 52.
Put 4 as the next digit of the answer. 
Result so far: 7744.0
If we take 348 away from 400, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 7:
If we divide 520 by 87, we get 5 and a remainder of 85.
The next digit of our result is 5. 
Result so far: 7744.5
Subtracting 435 from 520 leaves us with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Going ahead to step 8:
If we divide 850 by 87, we get 9 and a remainder of 67.
Record the quotient 9 as the next digit in the result. 
Result so far: 7744.59
The remainder is 67 after subtracting 783 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Step 9:
87 can be fit into 670 7 times, resulting in a remainder of 61.
Write down 7 as next digit of the result. 
Result so far: 7744.597
Deduct 609 from 670 and we're left 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.

Going ahead to step 10:
If we divide 610 by 87, we get 7 and a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 7744.5977
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.

The final outcome is 7744.5977, with a leftover of 1e-05.