In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.

Very wobbly when mugs are on doesn’t have enough strength to hold 3 mugs let alone 6 of them.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Very wobbly when mugs are on doesn’t have enough strength ...