Annie, Kathleen, and Elizabeth are the only sellers of cheesecakes in an isolated village.

The table shows the quantity of cheesecakes that they supply at various prices.

When the price of a cheesecake is $$7\mathrm{.}00,$ how many cheesecakes are supplied in the market in a week?

$\backslash$table$[[\backslash$table$[[$Price$],[($dollars per$],[$cake$)]],\backslash$table$[[$Quantity supplied$],[($cheesecakes per week$)]]],[$Annie$,$Kathleen,Elizabeth$],[7\mathrm{.}00,500,300,200],[8\mathrm{.}00,550,350,350],[9\mathrm{.}00,600,400,500],[10\mathrm{.}00,650,450,650]]$

When the price of a cheesecake is $$7\mathrm{.}00,$ the quantity of cheesecakes supplied in the market in a week is