Let's divide 87959701 by 685
The aim is to understand the frequency of 685 in 87959701.

Going ahead to step 1:
When dividing 8 by 685, we get 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 685

Moving on to step 2:
685 can be fit into 87 0 times, resulting in a remainder of 87.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 87 leaves us with 87.
Fetch the next digit (9) from the dividend, attach it to 87 and continue: 879 / 685

Step 3:
The number 685 fits into 879 1 times, leaving a remainder of 194.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 685 away from 879, we end up with 194.
Take the next digit (5) from the dividend and append it to 194, then repeat: 1945 / 685

Step 4:
685 goes into 1945 2 times with a remainder of 575.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we take 1370 away from 1945, we end up with 575.
Fetch the next digit (9) from the dividend, attach it to 575 and continue: 5759 / 685

Going ahead to step 5:
685 goes into 5759 8 times with a remainder of 279.
Put 8 as the next digit of the answer. 
Result so far: 128.0
Deduct 5480 from 5759 and we're left with 279.
Bring next digit (7) of the dividend behind the 279 and repeat the process: 2797 / 685

On to step 6:
2797 divided by 685 is 4 with a remainder of 57.
The next digit of our result is 4. 
Result so far: 1284.0
Subtracting 2740 from 2797 leaves us with 57.
Grab the next digit (0) from the dividend, add it to 57, then carry on: 570 / 685

Advancing to step 7:
570 divided by 685 is 0 with a remainder of 570.
The number 0 becomes the next digit in our result. 
Result so far: 12840.0
If we subtract 0 from 570, we get 570.
Bring next digit (1) of the dividend behind the 570 and repeat the process: 5701 / 685

Going ahead to step 8:
685 goes into 5701 8 times with a remainder of 221.
Record the quotient 8 as the next digit in the result. 
Result so far: 128408.0
If we take 5480 away from 5701, we end up with 221.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2210, and continue the process.

Step 9:
685 goes into 2210 3 times with a remainder of 155.
The next digit of our result is 3. 
Result so far: 128408.3
The remainder is 155 after subtracting 2055 from 2210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Let's proceed to step 10:
The number 685 fits into 1550 2 times, leaving a remainder of 180.
Write down 2 as next digit of the result. 
Result so far: 128408.32
Subtract 1370 from 1550 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Moving on to step 11:
If we divide 1800 by 685, we get 2 and a remainder of 430.
The number 2 becomes the next digit in our result. 
Result so far: 128408.322
If we subtract 1370 from 1800, we get 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

The final outcome is 128408.322, with a leftover of 0.043.