The BubbleTea$4$Me take$-$away cafe that Jane started last month is a big hit! Demand for the popular drink is increasing faster than they imagined. The past $6$ weeks of data are presented below.

Required:

Using a forecast for the first week of $400,$ an initial trend forecast of $87,$ and a smoothing $5$ parameters of $0\mathrm{.}3$ for both demand smoothing and trend smoothing, calculate the Forecast for the Next Period and the Trend value.

$6$ Note: Round your answers to four decimal places.