Here are some links to Khan Academy videos if you need any extra math review.
Reducing Fractions: https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/equivalent-fractions-pre-alg/v/fractions-in-lowest-terms
Multiplying Decimals: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/multiplying-decimals-pre-alg/v/more-involved-multiplying-decimals-example
Dividing Decimals: https://www.khanacademy.org/math/pre-algebra/decimals-pre-alg/dividing-decimals-pre-alg/v/dividing-decimals
Best,
Mr. Itow