$2\mathrm{.}2$ A company that manufactures containers has a standard price of R$5$ per gram for tin manufacturing materials. Each time a company manufactures $1$ container, it expects to use $50$ g of material. After analysis, the company found that $55$ g of material was actually used to manufacture $1$ container at a cost of R$4$ per gram. The output at the end of July is $100000$ units. Determine the total direct material variance for the process and state whether the variance is favourable or unfavourable.