We're dividing 711580 by 12 
The aim is to understand the frequency of 12 in 711580.

On to step 1:
7 divided by 12 is 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (1) from the dividend, add it to 7, then carry on: 71 / 12

Moving on to step 2:
If we divide 71 by 12, we get 5 and a remainder of 11.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we subtract 60 from 71, we get 11.
Fetch the next digit (1) from the dividend, attach it to 11 and continue: 111 / 12

Advancing to step 3:
The number 12 fits into 111 9 times, leaving a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 59.0
Subtract 108 from 111 to get 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 12

Moving on to step 4:
12 can be fit into 35 2 times, resulting in a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 592.0
If we subtract 24 from 35, we get 11.
Grab the next digit (8) from the dividend, add it to 11, then carry on: 118 / 12

On to step 5:
12 can be fit into 118 9 times, resulting in a remainder of 10.
Write down 9 as next digit of the result. 
Result so far: 5929.0
Subtracting 108 from 118 leaves us with 10.
Bring next digit (0) of the dividend behind the 10 and repeat the process: 100 / 12

Going ahead to step 6:
If we divide 100 by 12, we get 8 and a remainder of 4.
Record the quotient 8 as the next digit in the result. 
Result so far: 59298.0
If we subtract 96 from 100, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 7:
40 divided by 12 is 3 with a remainder of 4.
The next digit of our result is 3. 
Result so far: 59298.3
The remainder is 4 after subtracting 36 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 8:
40 divided by 12 is 3 with a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 59298.33
Subtract 36 from 40 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 59298.33 with a remaining 0.004.