You are analyzing the inventory management efficiency of two leading retail giants, Walmart Inc. and Target Corporation, in the retail industry.

Requirements:

1. Walmart reported cost of goods sold (COGS) of $386.4 billion and an average inventory of $43.1 billion for the fiscal year 2023. Target recorded COGS of $74.5 billion and an average inventory of $8.3 billion during the same period.
2. Calculate the inventory turnover ratio for both Walmart and Target.
3. Compare and interpret the inventory turnover ratios of Walmart and Target, discussing which company demonstrates better inventory management efficiency.