We're dividing 2401680 by 80 
The aim is to understand the frequency of 80 in 2401680.

On to step 1:
The number 80 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (4) from the dividend and append it to 2, then repeat: 24 / 80

Let's proceed to step 2:
If we divide 24 by 80, we get 0 and a remainder of 24.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 24 leaves us with 24.
Append the next digit (0) from the dividend to 24 and continue with: 240 / 80

On to step 3:
80 goes into 240 3 times with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 240 away from 240, we end up with 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 80

Moving on to step 4:
The number 80 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 30.0
If we take 0 away from 1, we end up with 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 80

On to step 5:
80 goes into 16 0 times with a remainder of 16.
The next digit of our result is 0. 
Result so far: 300.0
Subtract 0 from 16 to get 16.
Fetch the next digit (8) from the dividend, attach it to 16 and continue: 168 / 80

Going ahead to step 6:
The number 80 fits into 168 2 times, leaving a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 3002.0
Subtracting 160 from 168 leaves us with 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 80

Going ahead to step 7:
When dividing 80 by 80, we get 1 with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 30021.0
Deduct 80 from 80 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.

On to step 8:
0 divided by 80 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 30021.0
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.

On to step 9:
0 divided by 80 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 30021.0
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.

The final outcome is 30021.0, with a leftover of 0.0.