407657 divided by 80 
The aim is to understand the frequency of 80 in 407657.

Step 1:
4 divided by 80 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 80

Let's proceed to step 2:
When dividing 40 by 80, we get 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Append the next digit (7) from the dividend to 40 and continue with: 407 / 80

Let's proceed to step 3:
The number 80 fits into 407 5 times, leaving a remainder of 7.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Deduct 400 from 407 and we're left with 7.
Take the next digit (6) from the dividend and append it to 7, then repeat: 76 / 80

Moving on to step 4:
When dividing 76 by 80, we get 0 with a remainder of 76.
The number 0 becomes the next digit in our result. 
Result so far: 50.0
If we take 0 away from 76, we end up with 76.
Append the next digit (5) from the dividend to 76 and continue with: 765 / 80

On to step 5:
80 goes into 765 9 times with a remainder of 45.
Record the quotient 9 as the next digit in the result. 
Result so far: 509.0
Subtracting 720 from 765 leaves us with 45.
Append the next digit (7) from the dividend to 45 and continue with: 457 / 80

Advancing to step 6:
80 can be fit into 457 5 times, resulting in a remainder of 57.
Record the quotient 5 as the next digit in the result. 
Result so far: 5095.0
The remainder is 57 after subtracting 400 from 457.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Step 7:
80 can be fit into 570 7 times, resulting in a remainder of 10.
Use 7 as the next digit of our solution. 
Result so far: 5095.7
Subtract 560 from 570 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
When dividing 100 by 80, we get 1 with a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 5095.71
If we subtract 80 from 100, 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.

On to step 9:
When dividing 200 by 80, we get 2 with a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 5095.712
Deduct 160 from 200 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 10:
When dividing 400 by 80, we get 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 5095.7125
If we subtract 400 from 400, we 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 11:
If we divide 0 by 80, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 5095.7125
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.

Moving on to step 12:
80 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 5095.7125
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.

The final result is 5095.7125 with a remainder of 0.0.