Answer:
-25/12
Explanation:
Convert the mixed number 16 2/3 to an improper fraction. Multiply the whole number by the denominator, them add the product to the numerator.

Multiply the two fractions -1/8 and 50/3
The product's numerator is the product of the two numerators in the question.
The product's denominator is the product of the two denominators in the question.

Reduce the fraction at the end. Both numerator and denominator are divisible by 2.
-25/12 is an improper fraction because the numerator is greater than the denominator.