Let's divide 686950 by 40
The aim is to understand the frequency of 40 in 686950.

Step 1:
6 divided by 40 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 40

Moving on to step 2:
40 can be fit into 68 1 times, resulting in a remainder of 28.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 40 from 68, we get 28.
Include the next digit (6) from the dividend after 28, then repeat: 286 / 40

Step 3:
40 goes into 286 7 times with a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 17.0
The remainder is 6 after subtracting 280 from 286.
Bring next digit (9) of the dividend behind the 6 and repeat the process: 69 / 40

Step 4:
69 divided by 40 is 1 with a remainder of 29.
The next digit of our result is 1. 
Result so far: 171.0
Subtract 40 from 69 to get 29.
Include the next digit (5) from the dividend after 29, then repeat: 295 / 40

On to step 5:
When dividing 295 by 40, we get 7 with a remainder of 15.
Use 7 as the next digit of our solution. 
Result so far: 1717.0
Subtracting 280 from 295 leaves us with 15.
Append the next digit (0) from the dividend to 15 and continue with: 150 / 40

Let's proceed to step 6:
When dividing 150 by 40, we get 3 with a remainder of 30.
Write down 3 as next digit of the result. 
Result so far: 17173.0
Subtract 120 from 150 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 7:
40 goes into 300 7 times with a remainder of 20.
Use 7 as the next digit of our solution. 
Result so far: 17173.7
If we subtract 280 from 300, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 8:
The number 40 fits into 200 5 times, leaving a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 17173.75
The remainder is 0 after subtracting 200 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
0 divided by 40 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 17173.75
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
The number 40 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 17173.75
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 17173.75, with a leftover of 0.0.