You ask the owner of a food truck $($called The Burger Buggy$)$ about her inventory, in particular you inquire about the buns. She tells you that they sell about $2000$ burgers per week and on average have about $350$ buns on hand. You may assume that The Burger Buggy is open $7$ days a week.

If she wants to sell the buns within $1\mathrm{.}00$ day of purchasing, how many buns should she have on hand instead of $350?$