please help me

Your company wants to set aside a fixed amount every year to a sinking fund account to replace three pieces of manufacturing equipment. The installed costs are $250,000 for Machine Number 1, $400,000 for Machine Number 2, and $550,000 for Machine Number 3. Consider these costs to be present cost (year 1). The account pays 5% interest compounded annually. The timeline for replacement is 7 years. Taking into consideration inflation of 4% annually, how much should your company deposit annually to meet this goal? CNC Machine Tools Year Cost per $1000 Yearly Inflation Rate 2010 250.00 2011 262.00 2012 270.00 2013 276.00 2014 281.00 2015 LA 282.00 2016 LA 284.00 2017 69 286.00