Solve the following involving integers and rational numbers:

a. 0.4*3
b. ⅗/½
c. 0.65*5
d. ⅝/⅓

a. 0.4*3 = 1.2

b. ⅗/½ = (3/5) / (1/2) = 3/5 * 2/1 = 6/5 = 1.2

c. 0.65*5 = 3.25

d. ⅝/⅓ = (5/8) / (1/3) = 5/8 * 3 = 15/8 = 1.875