A machine cell uses $200$ pounds of a certain material each day. Material is transported in vats that hold $20$ pounds each. Cycle time for the vats is about two hours. The manager has assigned an inefficiency factor of $\mathrm{.}08$ to the cell. The plant operates on an eight$-$hour day.

How many vats will be used? $($Round up your answer to the next whole number.$)$