Pension plan assets were $$320$ million at the beginning of the year. The retum on plan assets was $5\%.$ At the end of the year, retiree benefits paid by the trustee were $$14$ million and cash invested in the pension fund was $$18$ million.

What was the amount of the pension plan assets at year$-$end?

Note: Enter your answer in millions $($i$.$e$.,10,000,000$ should be entered as $10).$

$\backslash$table$[[$Pension plan assets,million$]]$