Use this story problem and payoff table to answer questions $1-6$: Jeffrey Helm owns a health and fitness center called Bulk$-$Up in Harrisburg. He is considering adding more floor space to meet increasing demand. He will either add no floor space $($N$),$ a moderate area of floor space $($M$),$ a large area of floor space $($L$),$ or an area of floor space that doubles the size of the facility $($D$).$ Demand will either stay fixed, increase slightly, or increase greatly. The following are the changes in Bulk$-$Up's annual profits under each combination of expansion level and demand change level: Adding a moderate amount of floor space is a decision alternative.Once the correct strategy is applied, what is the optimal payoff calculation? Enter your value as a whole number, without decimals, commas or dollar signs. Example: $600$