Q$13$: A muffin production facility operates around the clock, using lean principles. They use $30$ Kanban cards for inventory management. Their daily demand is $52,800$ muffins, lead time to receive raw materials is $6$ hours, and the bin capacity is $480.$ What is the safety. factor that this muffin facility is using in its decision making? Please enter you answer below $($round up to two places of decimal, if any$).$

$[1\mathrm{.}5$ point$]$

$\%($enter only numeric$)$