How do you divide 2\3 divided by 7\8 using kcf answer

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

5× 1/2 = ? a) more than 5 because you are multiplying by a whole number b) 5/10 because you multiply the numerator and denominator by 5 c) less than 5 because you are multiplying by a number that is more than 1 d) less than 5 because you are multiplying by a number that is less than 1

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000