Suppose that Linksys is considering the development of a wireless home networking appliance, called HomeNet, that will provide both the hardware and the software necessary to run an entire home from any Internet connection. Linksys's receivables are 15.2% of sales and its payables are 14.8% of COGS. Forecast the required investment in net working capital for HomeNet assuming that sales and cost of goods sold (COGS) will be as follows: LOADING... . The required investment in net working capital for year 0 is

Year 0 1 2 3 4

Sales $23,526 $26,602 $23,828 $8,376

COGS $9,511 $10,754 $9,633 $3,386

It tells me to put this in to excel? but there is nothing showing or telling me the process of doing that. Please help!