Let's divide 669665 by 40
The aim is to understand the frequency of 40 in 669665.

Advancing to step 1:
The number 40 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 40

Step 2:
66 divided by 40 is 1 with a remainder of 26.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 40 from 66 and we're left with 26.
Append the next digit (9) from the dividend to 26 and continue with: 269 / 40

Moving on to step 3:
40 goes into 269 6 times with a remainder of 29.
The next digit of our result is 6. 
Result so far: 16.0
Subtract 240 from 269 to get 29.
Fetch the next digit (6) from the dividend, attach it to 29 and continue: 296 / 40

Step 4:
296 divided by 40 is 7 with a remainder of 16.
The next digit of our result is 7. 
Result so far: 167.0
If we take 280 away from 296, we end up with 16.
Grab the next digit (6) from the dividend, add it to 16, then carry on: 166 / 40

Let's proceed to step 5:
166 divided by 40 is 4 with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 1674.0
The remainder is 6 after subtracting 160 from 166.
Grab the next digit (5) from the dividend, add it to 6, then carry on: 65 / 40

Moving on to step 6:
65 divided by 40 is 1 with a remainder of 25.
Write down 1 as next digit of the result. 
Result so far: 16741.0
The remainder is 25 after subtracting 40 from 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 7:
When dividing 250 by 40, we get 6 with a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 16741.6
Deduct 240 from 250 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
If we divide 100 by 40, we get 2 and a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 16741.62
Subtract 80 from 100 to 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.

Moving on to step 9:
40 can be fit into 200 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 16741.625
Subtract 200 from 200 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.

Going ahead to step 10:
When dividing 0 by 40, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 16741.625
Subtracting 0 from 0 leaves us 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.

Let's proceed to step 11:
40 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 16741.625
The remainder is 0 after subtracting 0 from 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 16741.625, with a leftover of 0.0.