The welding department supplies parts to the final assembly line. Management decides to implement a kanban system and has collected the following data:

The daily demand is $2,000$ units.

The production lead time is $4$ days $($this includes processing time, transport time, and waiting time$).$

Management has decided to have $1$ day of safety stock.

One container fits $400$ units.

How many kanban containers will be needed to support this system?

Note: Round up to next whole number.