Mike's Mustard Company uses a kanban system to manufacture bulk mustard in gallon containers for restaurants. The demand for container lids over an eight$-$hour production day is $1000$ units. The average waiting time for a container of lids is $45$ minutes. The processing time for a container of lids is $2$ hours, and a container holds $70$ lids.

Use the information in Case $8\mathrm{.}3.$ How many kanban containers would be required if a $15\%$ policy variable is used?