Help and explanation figuring out how much is expected of bond portfolio to go up

A bond portfolio has a modified duration of 5.8 years. If interest rates are expected to go down by 6 basis points across the board, how much do you expect the market price of this bond portfolio to go up (in dollar amount terms)? Suppose the portfolio's current market value is $170 million. Round your calculations to the nearest 0.01, i.e., two decimal places. And, give your answer in millions