We look at the division of 7112400 by 664 
The aim is to understand the frequency of 664 in 7112400.

Step 1:
The number 664 fits into 7 0 times, leaving a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 664

Going ahead to step 2:
664 can be fit into 71 0 times, resulting in a remainder of 71.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 71, we end up with 71.
Append the next digit (1) from the dividend to 71 and continue with: 711 / 664

On to step 3:
If we divide 711 by 664, we get 1 and a remainder of 47.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 664 from 711 leaves us with 47.
Bring next digit (2) of the dividend behind the 47 and repeat the process: 472 / 664

On to step 4:
472 divided by 664 is 0 with a remainder of 472.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Deduct 0 from 472 and we're left with 472.
Bring next digit (4) of the dividend behind the 472 and repeat the process: 4724 / 664

Going ahead to step 5:
When dividing 4724 by 664, we get 7 with a remainder of 76.
The next digit of our result is 7. 
Result so far: 107.0
The remainder is 76 after subtracting 4648 from 4724.
Take the next digit (0) from the dividend and append it to 76, then repeat: 760 / 664

Step 6:
664 goes into 760 1 times with a remainder of 96.
The next digit of our result is 1. 
Result so far: 1071.0
If we take 664 away from 760, we end up with 96.
Take the next digit (0) from the dividend and append it to 96, then repeat: 960 / 664

Let's proceed to step 7:
If we divide 960 by 664, we get 1 and a remainder of 296.
Record the quotient 1 as the next digit in the result. 
Result so far: 10711.0
Subtracting 664 from 960 leaves us with 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Going ahead to step 8:
The number 664 fits into 2960 4 times, leaving a remainder of 304.
Write down 4 as next digit of the result. 
Result so far: 10711.4
If we subtract 2656 from 2960, we get 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Moving on to step 9:
3040 divided by 664 is 4 with a remainder of 384.
Record the quotient 4 as the next digit in the result. 
Result so far: 10711.44
Subtract 2656 from 3040 to get 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

The final outcome is 10711.44, with a leftover of 0.384.