We divide 671581 by 5
The aim is to understand the frequency of 5 in 671581.

Going ahead to step 1:
When dividing 6 by 5, we get 1 with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 1 after subtracting 5 from 6.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 5

Advancing to step 2:
The number 5 fits into 17 3 times, leaving a remainder of 2.
The next digit of our result is 3. 
Result so far: 13.0
Subtract 15 from 17 to get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 5

Going ahead to step 3:
The number 5 fits into 21 4 times, leaving a remainder of 1.
The next digit of our result is 4. 
Result so far: 134.0
Deduct 20 from 21 and we're left with 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 5

Let's proceed to step 4:
5 goes into 15 3 times with a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 1343.0
Subtract 15 from 15 to get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 5

Moving on to step 5:
8 divided by 5 is 1 with a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 13431.0
Subtract 5 from 8 to get 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 5

Let's proceed to step 6:
5 goes into 31 6 times with a remainder of 1.
The number 6 becomes the next digit in our result. 
Result so far: 134316.0
If we subtract 30 from 31, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
5 goes into 10 2 times with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 134316.2
If we subtract 10 from 10, 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.

Moving on to step 8:
If we divide 0 by 5, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 134316.2
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.

Going ahead to step 9:
The number 5 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 134316.2
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 134316.2 with a remainder of 0.0.