We divide 53573648 by 80
The aim is to understand the frequency of 80 in 53573648.

Let's proceed to step 1:
The number 80 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 80

Advancing to step 2:
The number 80 fits into 53 0 times, leaving a remainder of 53.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 53 and we're left with 53.
Take the next digit (5) from the dividend and append it to 53, then repeat: 535 / 80

Let's proceed to step 3:
80 can be fit into 535 6 times, resulting in a remainder of 55.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Deduct 480 from 535 and we're left with 55.
Take the next digit (7) from the dividend and append it to 55, then repeat: 557 / 80

Let's proceed to step 4:
If we divide 557 by 80, we get 6 and a remainder of 77.
Record the quotient 6 as the next digit in the result. 
Result so far: 66.0
If we subtract 480 from 557, we get 77.
Take the next digit (3) from the dividend and append it to 77, then repeat: 773 / 80

Going ahead to step 5:
80 goes into 773 9 times with a remainder of 53.
Use 9 as the next digit of our solution. 
Result so far: 669.0
If we take 720 away from 773, we end up with 53.
Grab the next digit (6) from the dividend, add it to 53, then carry on: 536 / 80

Let's proceed to step 6:
If we divide 536 by 80, we get 6 and a remainder of 56.
Record the quotient 6 as the next digit in the result. 
Result so far: 6696.0
Deduct 480 from 536 and we're left with 56.
Include the next digit (4) from the dividend after 56, then repeat: 564 / 80

Moving on to step 7:
When dividing 564 by 80, we get 7 with a remainder of 4.
Use 7 as the next digit of our solution. 
Result so far: 66967.0
The remainder is 4 after subtracting 560 from 564.
Grab the next digit (8) from the dividend, add it to 4, then carry on: 48 / 80

Step 8:
80 goes into 48 0 times with a remainder of 48.
Put 0 as the next digit of the answer. 
Result so far: 669670.0
Subtract 0 from 48 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 9:
If we divide 480 by 80, we get 6 and a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 669670.6
Deduct 480 from 480 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.

Step 10:
When dividing 0 by 80, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 669670.6
If we subtract 0 from 0, 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.

Going ahead to step 11:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 669670.6
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 669670.6, with a leftover of 0.0.