107/10 cannot be simplified any down further, but it can be changed into a decimal and a mixed number.
To get the decimal, we can divide the numerator (107) by the denominator (10) to get the answer 10.70, which is 107/10 in decimal form.
To get the mixed number, we once again divide the numerator (107) by the denominator (10) and get the answer of 10 with a remainder of 7. To show this as a mixed fraction, we would show it as:
I'm going to assume that you mean 56% of the calories come from fat. So, we would have to find out 56% of 270 which is 151.2, so now we know that 151.2 calories in the cereal come from fat!