We're dividing 938680 by 87 
The aim is to understand the frequency of 87 in 938680.

Advancing to step 1:
If we divide 9 by 87, we get 0 and a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 87

Advancing to step 2:
93 divided by 87 is 1 with a remainder of 6.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 87 from 93, we get 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 87

Moving on to step 3:
When dividing 68 by 87, we get 0 with a remainder of 68.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
The remainder is 68 after subtracting 0 from 68.
Include the next digit (6) from the dividend after 68, then repeat: 686 / 87

Going ahead to step 4:
If we divide 686 by 87, we get 7 and a remainder of 77.
Record the quotient 7 as the next digit in the result. 
Result so far: 107.0
Deduct 609 from 686 and we're left with 77.
Grab the next digit (8) from the dividend, add it to 77, then carry on: 778 / 87

Advancing to step 5:
When dividing 778 by 87, we get 8 with a remainder of 82.
Write down 8 as next digit of the result. 
Result so far: 1078.0
Deduct 696 from 778 and we're left with 82.
Grab the next digit (0) from the dividend, add it to 82, then carry on: 820 / 87

Step 6:
The number 87 fits into 820 9 times, leaving a remainder of 37.
Use 9 as the next digit of our solution. 
Result so far: 10789.0
Subtract 783 from 820 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 7:
87 goes into 370 4 times with a remainder of 22.
Put 4 as the next digit of the answer. 
Result so far: 10789.4
Subtracting 348 from 370 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 8:
220 divided by 87 is 2 with a remainder of 46.
The number 2 becomes the next digit in our result. 
Result so far: 10789.42
Subtracting 174 from 220 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 9:
460 divided by 87 is 5 with a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 10789.425
If we take 435 away from 460, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 10:
If we divide 250 by 87, we get 2 and a remainder of 76.
Record the quotient 2 as the next digit in the result. 
Result so far: 10789.4252
Subtracting 174 from 250 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 11:
87 can be fit into 760 8 times, resulting in a remainder of 64.
The number 8 becomes the next digit in our result. 
Result so far: 10789.42528
Subtracting 696 from 760 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 12:
When dividing 640 by 87, we get 7 with a remainder of 31.
The next digit of our result is 7. 
Result so far: 10789.425287
The remainder is 31 after subtracting 609 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 13:
87 goes into 310 3 times with a remainder of 49.
The next digit of our result is 3. 
Result so far: 10789.4252873
The remainder is 49 after subtracting 261 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

On to step 14:
490 divided by 87 is 5 with a remainder of 55.
The number 5 becomes the next digit in our result. 
Result so far: 10789.42528735
If we take 435 away from 490, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

The final result is 10789.42528735 with a remainder of 5.5e-08.